To determine the factors that affect the solubility of materials *
|
|
- Cassandra Chapman
- 5 years ago
- Views:
Transcription
1 OpenStax-CNX module: m To determine the factors that affect the solubility of materials * Siyavula Uploaders This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License NATURAL SCIENCES 2 Form, reaction and alteration of materials 3 4 EDUCATOR SECTION 5 Memorandum 1. In which glass is the sugar dissolved quickest? In the glass with warm water. 2. Explain why this happens. The solubility of a substance is aected by the temperature. Assignment 13: (Groupwork) 1. How many teaspoons of sugar could you dissolve into the glass of water? The amount depends on the individual experiment. Discus in your group what you could do to dissolve more sugar into the water. The water (solution) can be heated. The sugar crystals (dissolved substance) and be made ner. * Version 1.1: Mar 13, :04 am
2 OpenStax-CNX module: m Assignment 14: Observation: The water has evaporated and small crystals have been formed: copper sulphate crystals. Under the microscope the crystals appear as small blocks or cubes. Conclusion: When a solution is left to stand the opposite of dissolving occurs. The dissolved substance crystallises into a solid in the form of crystals. Assignment 15: 1. Is the amount and type of solvent the same in all three cases? Yes Which substance was dissolved the least after the rst teaspoon? Corn meal Is corn meal insoluble? Yes 4. Which substance dissolved best? Salt Conclusion: Not all substances are equally soluble. Assignment 16: 1. What do you see? Oil does not dissolve. You continue to see drops of oil on the water 2. Where is the oil? While you are stirring it seems that the oil is mixed with the water, but the moment that you stop stirring the oil oats to the surface of the water. 3. Can oil dissolve in water? No 4. What is the reason for the answer above? Particles of oil are strongly attracted to each other. Water particles cannot move in between the oil particles, so oil is not soluble in water. Assignment 17: 1. What happens? The naphthalene akes do not dissolve in water but do dissolve in mentholated spirits. 2. Can you explain why this happens? Naphthalene akes are not soluble in water. 3. Complete. Naphthalene is easily dissolved in mentholated spirits but is not soluble in water
3 OpenStax-CNX module: m LEANER SECTION 7 Content 7.1 ACTIVITY: To determine the factors that aect the solubility of materials [LO 1.1, LO 1.2, LO 1.3] The solubility of a material is determined by: temperature; type of material; and type of solvent. ASSIGNMENT 12 To determine how temperature aects solubility. Requirements: Sugar A glass of cold water A glass of warm water A teaspoon Put one teaspoonful of sugar into the glass of cold water and another into the glass of warm water. Do not stir the water. Observe what happens. 1. In which glass is the sugar dissolved the quickest? 2. Explain why this happens. REMEMBER THE FOLLOWING IN CONNECTION WITH SOLUBILITY Sugar is SOLUBLE in water. The sugar is the DISSOLVED substance. The water is the SOLVENT. The sugar water is the SOLUTION. HEAT increases the process of solution. A saturated solution: Water can only take a certain amount of a dissolved substance like sugar. When the water can not take more of the substance, we say that it is a saturated solution. This is what a saturated solution looks like:
4 OpenStax-CNX module: m Figure 1 (Compare the sketch above to the previous sketch and ensure that you understand the dierence.) ASSIGNMENT 13 (GROUP WORK) To prepare a saturated solution. Requirements: Glass of tap water White sugar A teaspoon Fill the glass half full with tap water. Stir a teaspoonful of sugar into the water until it dissolves. Stir another teaspoonful of sugar into the water. Continue to add sugar to the water, until you observe that the sugar will no longer dissolve. 1. How many teaspoons of sugar dissolved in the water? 2. How are you able to dissolve more sugar in the water? Discuss this in your group. ASSIGNMENT 14 To investigate the formation of crystals.
5 OpenStax-CNX module: m Make a saturated solution of copper sulphate and water. Place a small amount of the solution in a saucer and allow it to stand for a day. Write your observations and conclusions. You may use a microscope. Observation: Conclusion: ASSIGNMENT 15 To determine how the type of substance aects solubility. Requirements: Three clean glasses Salt Maize meal Sulphur Three teaspoons Tap water Place exactly the same amount of water in each glass. Add one teaspoonful of salt to the rst glass and stir carefully. Count how many teaspoons of salt can be added before the solution is saturated. Repeat the experiment using maize meal and sulphur instead of salt. 1. Is the amount of soluble matter the same in each case? 2. Which substance dissolved the least after the rst teaspoonful? 3. Is maize meal soluble? 4. Which substance was most soluble? Conclusion: Not all substances are equally soluble. Solubility depends on the type of substance. ASSIGNMENT 16 Another experiment to show that not all substances are soluble. Requirements: A glass of tap water Cooking oil A teaspoon
6 OpenStax-CNX module: m Half ll the glass with water. Pour a small amount of oil onto the water. Stir the oil and water for a few minutes. 1. What do you see? 2. Where is the oil? 3. Can oil be dissolved in water? 4. What is the reason for your answer above? LIKE WATER OFF A DUCK'S BACK We say this about people who are not overcome by their problems. Water just rolls o a duck's back. The duck doesn't get wet at all. Ducks' feathers are oily. Water and oil cannot mix, that is why the water runs o the duck's back. Most aquatic birds have oily feathers. Penguins and other sea birds become very heavy when they are covered with oil. This happens when the sea is polluted with oil. The birds will eventually drown. To save them, the oil must be washed o their feathers with detergent. When they have been washed they cannot be put straight back into the sea because they will be soaked and will get very cold. The birds have to be looked after for two to three weeks until their feathers have regained the special coating of oil. ASSIGNMENT 17 To determine how a solvent aects solubility. Requirements: Water Methylated spirits Two glass asks Naphthalene akes (or crushed mothballs) Place a small amount of water in one ask and a small amount of spirits in the other. Add a teaspoon of naphthalene akes to each ask and stir. 1. What happens? 2. Can you explain why this has happened? 3. Complete: Naphthalene dissolves easily in but does not
7 OpenStax-CNX module: m dissolve in. REMEMBER: In all the experiments, except the last one, we have used only WATER as the solvent. There are many other solvents that can be used, like spirits, paran etc Assessment Learning Outcome 1:Learners respond condently to their desire to learn about natural phenomena; they investigate relationships and solve problems within the context of science, technology and the environment. Assessment Standard 1.1:We know this when the learnerplans investigations: helps to clarify focus questions for investigation and describes the kind of information which would be needed to answer the question; Assessment Standard 1.2:We know this when the learnerconducts investigations and collects data: conducts simple tests or surveys and records observations or responses; Assessment Standard 1.3:We know this when the learnerevaluates data and communicates ndings: relates observations and responses to the focus question.
EXPERIMENT 11 DOES THE FOOD WE EAT CONTAIN REDUCING SUGARS?
EXPERIMENT 11 DOES THE FOOD WE EAT CONTAIN REDUCING SUGARS? CSEC OBJECTIVE: Section B 2.6 Grade Level - 9&10 Introduction: The greater the concentration of reducing sugar present in a particular food,
More informationName: Date: Solubility Lab - Worksheet #3 Level 1
Name: Date: Solubility Lab - Worksheet #3 Level 1 In today s lab you will be working in groups to determine whether sugar or salt dissolves more quickly in water. The rate at which different substances
More informationNatural Sciences and Technology
PLANNING & TRACKING Shuters Also available for download from www.shuters.com TOP CLASS Natural Sciences and Technology Grade 6 PHOTOCOPIABLE OS1001285 CUSTOMER SERVICES THIS SERIES IS ALSO AVAILABLE AS
More informationActivity 4.2 Dissolving a substance in different liquids
Activity 4.2 Does colored sugar dissolve equally well in water, vegetable oil, and alcohol? In the introductory story on Activity sheet 4.1, the student added drink mix to different liquids. Many drink
More informationMiSP Solubility Lab L3
MiSP Solubility Lab L3 Name Date In today s lab you will be working in groups to determine whether sugar or salt dissolves more quickly in water. The rate at which different substances dissolve depends
More informationExperimental Techniques Question Paper 2
Experimental Techniques Question Paper 2 Level IGCSE Subject Chemistry Exam Board CIE Topic Experimental Techniques Sub-Topic Paper Type Alternative to Practical Booklet Question Paper 2 Time Allowed:
More informationChapter MEMBRANE TRANSPORT
Chapter 3 I MEMBRANE TRANSPORT The cell membrane, or plasma membrane, is the outermost layer of the cell. It completely surrounds the protoplasm or living portion of the cell, separating the cell s interior
More information10 th International Junior Science Olympiad, Pune, India. Experimental Tasks. Examination Rules: Task: C Tomato (6 marks for this task)
Task: C Tomato (6 marks for this task) Examination Rules: 1. You are not allowed to bring any tools except any personal medicine or any personal medical equipment. 2. You must sit at your designated table.
More informationSUMMATIVE ASSESSMENT I, Class IX
SUMMATIVE ASSESSMENT I, 0-6 SCIENCE Class IX Time Allowed : hours Maximum Marks : 90 General Instructions :. The question paper comprises of two Sections, A and B. You are to attempt both the sections..
More informationTo design procedures for testing whether each indicator solution is a good test for starch or for protein, answer questions 2 and 3. Be specific.
A Scientific Investigation What types of food contain starch and protein? by Dr. Ingrid Waldron, Department of Biology, University of Pennsylvania, 2013, http://serendip.brynmawr.edu/sci_edu/waldron/#starch
More informationMilk Experiment Background and Procedure
Milk Experiment Background and Procedure Water may be one of the most familiar substances on the planet, but it certainly isn't ordinary. In fact, water's unique chemical properties make it so complicated
More information12BL Experiment 2: Extraction & Saponification of Trimyristin from Nutmeg
12BL Experiment 2: Extraction & Saponification of Trimyristin from Nutmeg Safety: Proper lab goggles/glasses must be worn (even over prescription glasses). Heating of organic solvents releases irritating
More informationExperiment 2: Melting Points and the Identification of an Unknown and Cholesterol from Human Gallstones
1 Experiment 2: Melting Points and the Identification of an Unknown and Cholesterol from Human Gallstones Part 1. Melting Points and the Identification of an Unknown Read pp 211-220, Chapter 14, (especially
More informationFood for Thought. Key message: Food is the fuel of the human body, it keeps us alive and gives us energy.
Key message: Food is the fuel of the human body, it keeps us alive and gives us energy. SESE Curriculum Link: Content Strand Living Things Strand Unit Human Life skill DEVELOPMENT: Experimenting, observing,
More informationQualitative chemical reaction of functional group in protein
Qualitative chemical reaction of functional group in protein Certain functional groups in proteins can react to produce characteristically colored products. The color intensity of the product formed by
More informationExperiment Optional #2: The Synthesis of Aspirin
Experiment Optional #2: The Synthesis of Aspirin The natural world provides us with many of the medications in common use today. Taxol is the common name of a medication used in treating certain cancers;
More informationIdentifying Mystery Powders
Identifying Mystery Powders Instructor Takamasa Aoki (Chiba Keizai University High School) Hideko Hayashi Ryugo Oshima Takeshi Fujita (Chiba University Faculty of Education) Lesson Plan Properties of White
More informationExperiment 12 Lipids. Structures of Common Fatty Acids Name Number of carbons
Experiment 12 Lipids Lipids are a class of biological molecules that are insoluble in water and soluble in nonpolar solvents. There are many different categories of lipids and each category has different
More informationBeverage Density Lab
Name: date: Beverage Density Lab Introduction: It is known that popular beverages often contain large amounts of. Nutritionists have raised concern in recent years as to the high levels of in these drinks
More informationShire Oak School Primary Science Club. Record of activities booklet for:
Shire Oak School Primary Science Club Record of activities booklet for: Introduction Welcome to Shire Oak Science Club. The activities which you shall undertake over the next six sessions are as follows:
More informationBIO 12 UNIT 04: The Cell Membrane BCLN Rev. July, 2015
Project 1: Osmosis Lab Name: Potential Credits: /50 Project Goals: to gain and demonstrate a better understanding of osmosis Instructions Please read through the Unit 4 Lessons, paying particular attention
More informationTo understand osmosis, we must focus on the behavior of the solvent, not the solute.
GCC CHM 130LL Osmosis and Dialysis Purpose: The purpose of this experiment is to observe the closely related phenomena of osmosis and diffusion as it relates to dialysis. It is hoped that you will be able
More informationChapter 3: Macronutrients. Section 3.1 Pages 52-55
Chapter 3: Macronutrients Section 3.1 Pages 52-55 Diet Terms Nutrients The substances in food that gives us structural materials and energy. Macronutrients Nutrients that are required in large amounts.
More informationYear 8 Assessment. Autumn Term Remember!
Remember! Each section of questions gets harder as you go through (higher level questions at the end of each section). Try all questions. Write down an idea even if you re not sure you might get a mark!
More informationQuestion One: Put True ( ) or False ( X ):
Question One: Put True ( ) or False ( X ): 12 MARKS 1. Vitamin C rich in Guava compared to citrus food ( ). 2. The dose of vitamin B4 from 5,000 mg-10,000 mg is toxic ( ). 3. Vitamin B5 can reduced blood
More informationCLASS 6 COMPONENETS OF FOOD
CLASS 6 COMPONENETS OF FOOD The major nutrients in our food are CARBOHYDRATES, FATS, PROTEINS, MINERALS, VITAMINS, DIETARY FIBRE (ROUGHAGE), The tests for presence of carbohydrates, and are simpler. Types
More informationcould be dissolved in 100 g of water at the given unsaturated, saturated, or supersaturated?
Worksheet: Solubility Graphs Use the provided solubility graph to answer the following questions: For questions 1 4 an amount of solute is given, and a temperature is stated. If all of the solute could
More information(Writing model for laboratory note book)
Paper: Lab 50 Syllabus *************************************************************************** Experiment: Organic Qualitative analysis 1) Detection of elements (Nitrogen, Sulphur and halogens). 2)
More informationOrganic Molecule Composition of Milk: Lab Investigation
Name: Organic Molecule Composition of Milk: Lab Investigation Introduction & Background Milk & milk products have been a major food source from earliest recorded history. Milk is a natural, nutritionally
More informationName: Date: AP Biology LAB : FACTORS INFLUENCING ENZYME ACTIVITY
LAB : FACTORS INFLUENCING ENZYME ACTIVITY Background Enzymes are biological catalysts capable of speeding up chemical reactions by lowering activation energy. One benefit of enzyme catalysts is that the
More informationA Scientific Investigation What types of food contain starch and protein?1
A Scientific Investigation What types of food contain starch and protein?1 In this activity you will learn about starch and proteins and investigate which types of food contain starch and which types contain
More information1.3.1 The Cell Cycle and Mitosis *
OpenStax-CNX module: m43135 1 1.3.1 The Cell Cycle and Mitosis * Daniel Williamson This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 The cell cycle and
More informationPURPOSE: To synthesize soap from fat and lye. To observe the physical and chemical properties of soap.
FATS AND SAP: SAPNIFIATIN PURPSE: To synthesize soap from fat and lye. To observe the physical and chemical properties of soap. FATTY AIDS AND FATS: Fats and oils are mixtures of complex esters. Fat esters
More informationEXPERIMENT 9 LIPIDS: DETERMINATION OF FAT IN FRENCH FRIES. a fat molecule. Materials Needed
EXPERIMENT 9 LIPIDS: DETERMINATIN F FAT IN FRENCH FRIES Materials Needed French fries or potato chips 1 capillary tube dichloromethane boiling stones 2 Pasteur pipets 1 watch glass Br 2 /CCl 4 solution
More information3016 Oxidation of ricinoleic acid (from castor oil) with KMnO 4 to azelaic acid
6 Oxidation of ricinoleic acid (from castor oil) with KMnO 4 to azelaic acid CH -(CH ) OH (CH ) -COOH KMnO 4 /KOH HOOC-(CH ) -COOH C H 4 O (.) KMnO 4 KOH (.) (6.) C H 6 O 4 (.) Classification Reaction
More informationEUDRAGIT L 100 and EUDRAGIT S 100
Technical Information EUDRAGIT L 100 and EUDRAGIT S 100 Specification and Test Methods Ph. Eur. Methacrylic Acid - Methyl Methacrylate Copolymer (1:1) Methacrylic Acid - Methyl Methacrylate Copolymer (1:2)
More informationMaple Oatmeal. with Brown Sugar. NET WT 19.0 OZ (540g) Serving Suggestion DAIRY
Maple Oatmeal with Brown Sugar Serving Suggestion NET WT 19.0 OZ (540g) DAIRY Maple Oatmeal with Brown Sugar POUCH MAKES 6 PREPARED CUPS Nutrition Facts Serving Size 1.5 cups (135g) Servings Per Container
More informationOpenStax-CNX module: m Transport of Gases. OpenStax College. Abstract
OpenStax-CNX module: m46545 1 Transport of Gases OpenStax College This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 By the end of this section, you will
More informationBiol110L-Cell Biology Lab Spring Quarter 2012 Module 1-4 Friday April 13, 2012 (Start promptly; work fast; the protocols take ~4 h)
Biol110L-Cell Biology Lab Spring Quarter 2012 Module 1-4 Friday April 13, 2012 (Start promptly; work fast; the protocols take ~4 h) A. Microscopic Examination of the Plasma Membrane and Its Properties
More informationHomeostasis * Robert Bear David Rintoul. Based on Homeostasis by OpenStax. 1 Homeostatic Process
OpenStax-CNX module: m47426 1 Homeostasis * Robert Bear David Rintoul Based on Homeostasis by OpenStax This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License
More informationUnit 1, Section C.1. In which you will learn about: Solutions Electrolytes Saturation Solubility curves
Unit 1, Section C.1 In which you will learn about: Solutions Electrolytes Saturation Solubility curves Some Definitions A solution is a homogeneous mixture of 2 or more substances in a single phase. One
More information8.7 How Breathalysers Work. Grade 8 Activity Plan
8.7 How Breathalysers Work Grade 8 Activity Plan 1 8.7 How Breathalysers Work Objectives: 1. To understand the physiological implications and social consequences of increased blood alcohol concentration
More informationTie Dyed Milk Experiment. is amphipathic. What exactly does amphipathic mean? It means that soap
Tie Dyed Milk Experiment Navdip Bhangoo Sample Experiment Brief Introduction Before we begin this experiment we need to understand the properties of soap. We have all used soap to perform a chore like
More informationLab 6: Cellular Respiration
Lab 6: Cellular Respiration Metabolism is the sum of all chemical reactions in a living organism. These reactions can be catabolic or anabolic. Anabolic reactions use up energy to actually build complex
More informationSALIVA TEST Introduction
SALIVA TEST Introduction This is a practical lesson using saliva to learn digestive enzyme activity. We can check the existence of reducing sugars clearly by Benedict s reaction after salivary enzyme decomposes
More informationEXERCISE 3 Carbon Compounds
LEARNING OBJECTIVES EXERCISE 3 Carbon Compounds Perform diagnostic tests to detect the presence of reducing sugars (Benedict s), starch (Lugol s), protein (Biuret), lipid (SudanIV) and sodium chloride
More informationI, 2013 SUMMATIVE ASSESSMENT I, 2013 / SCIENCE. IX / Class IX. Time Allowed : 3 hours Maximum Marks : 90
EWFGDSK I, 0 SUMMATIVE ASSESSMENT I, 0 / SCIENCE IX / Class IX 90 Time Allowed : hours Maximum Marks : 90 General Instructions : The question paper comprises of two Sections, A and B. You are to attempt
More informationA BioPhausia. Laxabon 4 X 1 SI
Laxabon 4 X 1 SI Pu!Wr till 1 llter oral klsnlnw Pulverlill UteropploSni MedeifOrtannskOljnin!Y Tarmtommin!lsmlddel t.il drikl
More informationThis hands-on workshop is designed to teach students about which foods contain starch and the properties of starch
Aim: This hands-on workshop is designed to teach students about which foods contain starch and the properties of starch Curriculum Links: By contributing to investigations into familiar changes in substances
More informationEXPERIMENT 9 LIPIDS: DETERMINATION OF FAT IN FRENCH FRIES. a fat molecule. Materials Needed
EXPERIMENT 9 LIPIDS: DETERMINATIN F FAT IN FRENCH FRIES Materials Needed French fries or potato chips 1 capillary tube dichloromethane boiling stones 2 Pasteur pipets 1 applicator stick Br 2 / CH 2 Cl
More information8.8b Osmosis Project. Grade 8 Activity Plan
8.8b Osmosis Project Grade 8 Activity Plan Reviews and Updates 2 8.8b Osmosis Project Objectives: 1. To demonstrate osmosis and the permeability of the cell membrane. 2. Use plant cells to demonstrate
More informationCorn/Maize Starch. Speci cations
Corn/Maize Starch Maize starch also known as Corn starch. It is extracted from the endosperm of the corn kernel and has a distinctive appearance. Maize starch in natural, modified and dextrinised forms
More informationTEST. Directions: Circle the letter indicating whether the following statements are either true ("T") or false ("F").
TEST Directions: Circle the letter indicating whether the following statements are either true ("T") or false ("F"). T F 1. A closed glass jar of pickles is a closed system. T F 2. Cellular respiration
More informationDNA Extraction. Teachers Guide Introduction:
DNA Extraction Teachers Guide Introduction: Cells are the basic unit of life and make up all animals, plants and bacteria. A single cell is tiny around 1/500 th of a millimetre so small that the average
More informationGaNS Production Explained
GaNS Production Explained GaNS We need to create GaNS s (Gases in a Nano state) for many purposes. They are energetic balls of plasma which have both Magnetical & Gravitational fields. There are 5 common
More informationUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CO-ORDINATED SCIENCES
Centre Number Candidate Number Name UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CO-ORDINATED SCIENCES 0654/05 Paper 5 Practical Test October/November
More informationAP Biology Macromolecules
AP Biology Macromolecules Introduction: There are four broad classes macromolecules that can be found in living systems. Each type macromolecule has a characteristic structure and function in living organisms.
More informationSTATION 4: TONICITY due to OSMOSIS / Turgor Pressure in Plants
STATION 4: TONICITY due to OSMOSIS / Turgor Pressure in Plants Tonicity is the concentration of solutions that determines the direction water will move across a semi-permeable membrane. A solution is a
More informationWelcome & Review Yes No Comments and/or Changes
Washington State Snap-Ed Curriculum Fidelity for Continuous Improvement Lesson Assessment Tool for Show Me Nutrition: Grade 3 Lesson 4: Vitamins, Minerals and Water Educator Self-Assessment Supervisor
More informationPurity Tests for Modified Starches
Residue Monograph prepared by the meeting of the Joint FAO/WHO Expert Committee on Food Additives (JECFA), 82 nd meeting 2016 Purity Tests for Modified Starches This monograph was also published in: Compendium
More informationTHERMALLY OXIDIZED SOYA BEAN OIL interacted with MONO- and DIGLYCERIDES of FATTY ACIDS
THERMALLY OXIDIZED SOYA BEAN OIL interacted with MONO- and DIGLYCERIDES of FATTY ACIDS Prepared at the 39th JECFA (1992), published in FNP 52 Add 1 (1992). Metals and arsenic specifications revised at
More informationMaterials: Activity: Explanation:
Children will model how fat can be digested by bile. Materials: Whole milk Water Shallow dish or pie pan Food coloring Liquid dish or hand soap Cotton swabs Activity: 1) Pour about ½ inch of milk into
More informationProtein Analysis using Electrospray Ionization Mass Spectroscopy *
OpenStax-CNX module: m38341 1 Protein Analysis using Electrospray Ionization Mass Spectroscopy * Wilhelm Kienast Andrew R. Barron This work is produced by OpenStax-CNX and licensed under the Creative Commons
More informationTHERMALLY OXIDIZED SOYA BEAN OIL
THERMALLY OXIDIZED SOYA BEAN OIL Prepared at the 39th JECFA (1992), published in FNP 52 Add 1 (1992). Metals and arsenic specifications revised at the 55th JECFA (2000). An ADI of 0-3 mg/kg bw was established
More informationMarch is Nutrition Month Go Further with Food! Fiber
With Renata Shiloah M.S., R.D., C.D.N March is Nutrition Month Go Further with Food! Fiber 1. Insoluble fiber (roughage) is digestible. True [] False [] 2. There are two types of fiber (soluble fibers
More informationEXPERIMENT 13 QUALITATIVE ANALYSIS
PURPOSE: 1. To separate and identify each cation in a mixture of Ag +, Cu 2+, Zn 2+, and Ca 2+ cations. 2. To identify the cations present in three individually assigned unknown mixtures that may contain
More informationQUALITATIVE TEST OF PROTEIN
QUALITATIVE TEST F PRTEIN UTLINE Experment2 To detect the presence of peptide bonds or proteins in the sample Using Biuret Method Protein precipitation and denaturation Salt Strong Acid Heavy metals Heating
More informationBased on Introduction to Fractions and Multiplication and Division of Fractions: Proper Fractions, Impr. Mixed Numbers *
OpenStax-CNX module: m7 Derived copy of Introduction to Fractions and Multiplication and Division of Fractions: Proper Fractions, Improper Fractions, and Mixed Numbers * Ann Simao Based on Introduction
More informationName: There are two things that will determine which particles will pass through and which will not:
18 Diffusion and Osmosis in Living Systems Name: Problem: How do substances move into and out of cells? Introduction: In order for cells to carry on their life processes, they must take in materials and
More informationSAM Teachers Guide Lipids and Carbohydrates
SAM Teachers Guide Lipids and Carbohydrates Overview Students will explore the structure and function of two of the four major macromolecules, lipids and carbohydrates. They will look specifically at the
More informationSaturated And Unsaturated Solutions Worksheet Answers
We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with saturated and unsaturated
More informationExperiment The Thermodynamics of the Dissolution of Borax
Experiment The Thermodynamics of the Dissolution of Borax Borax is a commonly added to (clothes) wash water to increase the ph for more effective cleansing. 0 B.J E C T I V E S = -RTln K R. X T K, standard
More informationQualitative test of protein-lab2
1- Qualitative chemical reactions of amino acid protein functional groups: Certain functional groups in proteins can react to produce characteristically colored products. The color intensity of the product
More informationCBSE SAMPLE PAPER 05 (Solved) SUMMATIVE ASSESSMENT I Class-IX (SCIENCE) Time: 3 Hrs MM: 90
CBSE SAMPLE PAPER 05 (Solved) SUMMATIVE ASSESSMENT I Class-IX (SCIENCE) Time: 3 Hrs MM: 90 General Instructions (i) The question paper comprises of two Sections, A and B. You are to attempt both the sections.
More informationLab 2. The Chemistry of Life
Lab 2 Learning Objectives Compare and contrast organic and inorganic molecules Relate hydrogen bonding to macromolecules found in living things Compare and contrast the four major organic macromolecules:
More informationSaturated And Unsaturated Solutions Definition
We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with saturated and unsaturated
More informationDr.N Damodharan Professor and Head. Department of Pharmaceutics SRM College of Pharmacy
Dr.N Damodharan Professor and Head Department of Pharmaceutics SRM College of Pharmacy 1 Definition: - Medicines prepared according to the formulae of Galen. - A medicinal preparation composed mainly of
More informationYUM - YUM!! - The Digestion Lesson
YUM - YUM!! - The Digestion Lesson Presented by Amina Watson and Rose Do Recommended Grades: 4 th, 5 th, and 6 th grades. Purpose: To introduce and explore the various components of the digestive system
More information9. Determine the mass of the fat you removed from the milk and record in the table. Calculation:
Chemistry 100 Instructor s Initials Name: Experiment 14: Biochemistry Analysis of milk for the lipids, carbohydrates, and proteins. A. Determining the % Fat in Whole Milk 1. Weigh a clean, dry, empty 50
More informationDecember 2007/January 2008
December 2007/January 2008 In every issue: Diabetes - the Medical Perspective Diabetes and Food Exercise as a Part of Living Recipes to Try Medication Update New resources Events Diabetes - the Medical
More informationVitamin C science. project
project Vitamin C science Vitamin C is essential nutrient. A person needs at least 40mg vitamin C daily. The lack of vitamin C in the body can cause weak immunity, and even scurvy. It is important to know
More informationItem number Item number Item number
Tall Oil products product Distilled Tall Oil (DTO) Product name UCY10 UCY15 UCY20 UCY20-25 UCY25-30 UCY30-40 Item number 10-004 10-011 10-012 10-009 10-005 10-013 Page 3 4 5 6 7 8 Item number 10-006 10-007
More informationGrade 5 Lesson 1. Lesson Plan Page 2. Student Activity Handout 1 Page 5
Grade 5 Lesson 1 Item Page Lesson Plan Page 2 Student Activity Handout 1 Page 5 DETERMINING METHODS VISION-SETTING Marlins Think Tank: Fifth Grade Science Lesson Plan #1 OBJECTIVE. What is your objective?
More informationGrade: 5 Science Olympiad Qualifier Set: 2
Grade: 5 Science Olympiad Qualifier Set: 2 ---------------------------------------------------------------------------------------------------------- Max Marks: 60 Test ID: 55501 Time Allotted : 40 Mins
More informationApplication Note #67 Total Acid Number (TAN)
Application Note #67 Total Acid Number (TAN) Updated December 2016 Introduction: Acid Number or Total Acid Number (TAN) is used to test the quantity of acidic components in an oil sample. This test determines
More informationHaslingden High School Science Faculty HOMEWORK - Revision Questions Year 8 Block C
Haslingden High School Science Faculty HOMEWORK - Revision Questions Year 8 Block C Name: Form: Teacher: Given: Hand in: Comment: Target: Haslingden High School 1 Year 8 Block C Homework Booklet Revision
More informationEXPERIMENT 4 DETERMINATION OF REDUCING SUGARS, TOTAL REDUCING SUGARS, SUCROSE AND STARCH
Practical Manual Food Chemistry and Physiology EXPERIMENT 4 DETERMINATION OF REDUCING SUGARS, TOTAL REDUCING SUGARS, SUCROSE AND STARCH Structure 4.1 Introduction Objectives 4.2 Experiment 4a: Reducing
More informationLAB 04 Diffusion and Osmosis
LAB 04 Diffusion and Osmosis Objectives: Describe the physical mechanisms of diffusion and osmosis. Understand the relationship between surface area and rate of diffusion. Describe how molar concentration
More informationScience. Area of Experience: Science. At Junior Certificate level the student can:
Science Area of Experience: Science At Junior Certificate level the student can: 1 The Non-Living Environment Describe the characteristics and structures of different materials and explain how they change
More informationBiology Cell Unit Homework Packet #3
Biology Cell Unit Homework Packet #3 Name DUE: Hour HW #5 Egg Demo Drawings Analysis HW #6 Elodea Drawings lab Analysis HW #7 Cell Questions Membrane and Transport HW #8 Questions / 5 possible points Homework
More informationPotential Causes of Color Shift in Pigmented Emulsions. Tony O Lenick President
Potential Causes of Color Shift in Pigmented Emulsions Tony O Lenick President Results! 1) Color Shift! 2) Unpredictable results! 3) Stability issues especially pigmented emulsions (W/Si). Areas of Potential
More informationPetrolatum. Stage 4, Revision 1. Petrolatum is a purified semi solid mixture of hydrocarbons obtained from petroleum.
1 001-1208PDG.pdf Petrolatum Stage 4, Revision 1 Definition Petrolatum is a purified semi solid mixture of hydrocarbons obtained from petroleum. It may contain a suitable antioxidant. Description and Solubility
More informationInvestigating Lipids
Investigating Lipids In today s culture, there is a stigma associated with the word fat. While it is true that too much fat can lead to health problems, fats (or lipids) play very important roles in biology.
More informationc. The Maltese healthy plate is a guide for healthy living. i. List four foods which we our diet should be based on:
Year 9 Track: 3 SUBJECT: Home Economics Time: 1:30min! Read and answer all questions carefully: 1. Jasmine is 15 years old and the doctor advised her to follow a balanced diet in order to maintain a healthy
More informationPhysical Pharmacy. Interfacial phenomena. Khalid T Maaroof MSc. Pharmaceutical sciences School of pharmacy Pharmaceutics department
Physical Pharmacy Interfacial phenomena Khalid T Maaroof MSc. Pharmaceutical sciences School of pharmacy Pharmaceutics department 1 Introduction The boundary between two phases is generally described as
More informationPreparation and Comparison of Soaps Minneapolis Community and Tech. College C1152 Principles of Chemistry II v.5.10
Preparation and Comparison of Soaps Minneapolis Community and Tech. College C1152 Principles of Chemistry II v.5.10 Name Introduction Vegetable oil, like all animal and vegetable fats, are made up of a
More informationCHAPTER 3: MATERIALS AND METHODS
CHAPTER 3: MATERIALS AND METHODS Materials and Methods. The from different husks, fruits, and vegetables peels were estimated quantitatively by the following volumetric procedure s such as Bertrand s,
More informationFood and Digestive System
Food and Digestive System Subject/s: Science Teacher/s: Furlati School: class 2 (lower secondary school) (Project: Indicazioni Nazionali IC Monte San Pietro 2014) Sub-topic Starch in food Carbohydrates
More informationFunctional Skills Mathematics Level 2 sample assessment
Functional Skills Mathematics Level 2 sample assessment Candidate s paper Healthy Eating 2 ½ hours + 15 minutes reading time www.cityandguilds.com February 2010 Version 3.0 This assessment has two parts
More informationHow acidic are the things we drink? Measuring the ph of common drinks
Objective The objective of this activity is to compare the ph of fizzy drinks and alcoholic beverages, formulating a hypothesis and proceeding to check it using the Labdisc ph sensor. Introduction and
More information