Unit 6M.2: Making pure substances from mixtures
|
|
- Marlene Matthews
- 5 years ago
- Views:
Transcription
1 Unit 6M.2: Making pure substances from mixtures Making pure substances from mixtures Crystals Science skills: Classifying Observing Predicting By the end of this unit you should: Be able to suggest ways of separating dissolved solids from insoluble solids Know that crystallisation is a way of obtaining pure solids from solutions 90
2 6.11.3, Materials You can make a UsolutionU by dissolving a solid like salt in water. The solution looks like pure water because the solid has broken down into tiny invisible particles. To make the solid (UsoluteU) reappear, you can cause the UsolventU to UevaporateU, or turn into a gas. As the liquid disappears, the solid reappears because there is not enough liquid to dissolve it. You can get (water) the solvent again by condensation of the water vapour. 91
3 How can you separate a mixture of UinsolubleU solids from a liquid? UFiltrationU is used to separate a mixture of UinsolubleU solid and a liquid. The mixture is poured through a Ufilter paperu. Only the liquid passes through, and is called the UfiltrateU. We can use filter paper or a sieve to separate liquid from solid. 92
4 Activity: Getting a dissolved solid back. Material: Salt- Sugar Warm water A clear plastic tumbler A teaspoon Procedures: 1- Pour warm water into the tumbler until it is one third full. Add a spoonful of salt, stir until all the salt has dissolved. 2- Pour the salt solution into the saucer until there is a shallow pool, then put the saucer on a sunny windowsill or in some other warm, airy place. 3- Check the saucer twice a day for the next two or three days. What do you notice appearing on the saucer as the water gradually disappears? 93
5 Activity 2: Filtering through sand You will need A 500 ml plastic drink bottle Scissors Cotton wool Sand, gravel, pebbles Potting composite mixed with water Water Procedure 1-Cut the bottle in half. 2-Place the funneled end facing downwards into the base of the bottle. 3-Fill the funnel with cotton wool, pebbles, and gravel and sand, as shown, to make your filter. You might need to staple the funnel above the bottom. 4-Pour the composite mixed with water into the bottle and watch it drip through. 5-What color are the drips? How fast is the water passing through? 94
6 Activity: Getting dissolved solute back To obtain the solid from a mixture of sand and water and a salt solution. Materials Glass beaker Measuring cylinder Spatula Stirring rod Funnel Filter paper Conical flask Beaker Evaporating dish Hot plate 95
7 P P Materials Experiment 1: 3 1-Measure out 25cmP P of water into a 100 cmp 3 glass beaker. 2-Add 3 spatulas of sand to the water. 3-Stir the mixture until nothing else happens. 4-Set up the filter funnel, filter paper and conical flask. 5-Pour the sand and water mixture through the filter paper. 6-Write down exactly what happens Experiment 2: 3 1-Measure out 25cmP Pof water in a 100cmP 3 glass beaker. 2-Add 3 spatulas of salt to the water. 3-Stir the water until all the salt has dissolved. 4-Set up the filter funnel, filter paper and conical flask. 5-Pour the salt solution through the filter paper. 6-Write down exactly what happens
8 the the Materials Experiment 3: 1-Collect the salt solution formed during Experiment2. 2-Pour the salt solution into an evaporating dish. 3-Place the evaporating dish on a hot plate. 4-Write down exactly what happens. Conclusion : 1-Name the method that can be used to separate sand from a mixture of sand and water Name the method that can be used to separate salt from a salt solution In UExperiment 1U the solid remaining in the filter paper is called the. 4. In UExperiment 2U liquid that passes through the filter paper is called the. 5. In UExperiment 3U water that was in the evaporating dish goes into the. 97
9 Using the following equipment; draw a diagram to show how you would separate gravel from water, using filtration. You could also make this a flow chart with words. Scissors, mixing bowl, jug, funnel, paper towel, gravel 98
10 It is important when filtering not to over fill the filter paper. Examples of filtration in everyday life: 1- Water purification 2- Coffee making 3- Sewage Works purification 4- Vacuum cleaner 5- Drinking Water filter 99
11 Key idea We can separate solute from solution by evaporation and filtration Solids that will not dissolve are insoluble. Sometimes they are suspended in the solution (do not fall to the bottom). Key words Soluble Insoluble Suspended React Filtration Evaporation Purification Residue Project 1- Find a material that will make a good filter. Explain why you have chosen that material. How could you test it? List the equipment you would use. What would you be filtering? Choose some different mixtures. What would you measure to test the effectiveness of the filter? 2- Filtering is an important part of the process used to purify drinking water. Find out what material is used as a filter in water filtration plant. (You may be surprised!!) What is used in Qatar? What is used in other countries? 100
12 Key question 1-Filtration using the equipment shown can be used to separate which materials? A.A solution of copper sulfate and water. B. A solution of sodium chloride and water. C. A mixture of alcohol and water. D.A mixture of mud and water. E. A mixture of sand and sawdust. 2- Describe how you would separate the following mixtures A.A mixture of sand and iron filing : B. A mixture of sand and pebbles.: C. A mixture of sand and salt: Jamal put 10 cm3 of water and 3g of a different solid into each of four test-tubes. He shook each test-tube. The drawing shows the test-tubes after 10 minutes. a. Why can the sugar and salt no longer be seen in test- tubes A and C? A sugar B limestone C salt D sand b. If one of the solids was a mixture of salt and sand, what would Jamal see in the tube after 10 minutes? How would Jamal get from the tube (i) some pure sand and (ii) some pure salt? (i) (ii)
13 Materials Crystals A crystal: consists of matter that is formed from an ordered arrangement of atoms, molecules, or ions. Examples: 0Tquartz0T, 0Trock candy0t, 0Thalite0T Natural crystals: Natural crystals are dug out of the ground, where the earth's temperature and pressure cause them to form. Sugar Crystals Salt sugar USynthetic crystals Zincite Crystal Quartz Crystal 102
14 Observe the pictures of crystals.what do you observe? The sides of crystals are flat and smooth; Crystals have a regular shape; All crystals of the same substance have fundamentally the same shape. Crystals are a pure single substance. Crystal can be cleaved easily (such as Iceland spar or mica). When crystals are cleaved the new faces are always parallel to the old ones. 103
15 Growing Crystals Do you want to grow great crystals? These are general instructions for growing crystals that you can use for most crystal recipes. Obtain pure sample of a solute from a solution: Growing crystals You will need: Sugar Two clear plastic tumblers A Pencil - Cotton Paperclips Procedure: 1-Half fill a tumbler with warm water. 2-Stir in sugar until no more will dissolve, and then pour the clear solution into the other tumbler, leaving any undissolved sugar behind. 3- Use the pencil and cotton to suspend the paperclip in the solution. 104
16 Look at the paper clip every day for about a week and see what happens. My observation: Key idea Natural crystals are dug out of the ground, where the earth's temperature and pressure cause them to form. Crystals are structures that are formed from a regular repeated pattern of connected atoms or molecules. Key words Crystals Atoms Molecules Ions Natural crystals Synthetic crystals 105
17 Project Crystal gardens Drop a few coloured crystals into a 40% solution of sodium silicate ( water glass ) in a glass container. The crystals grow in vertical strands. The explanation involves osmosis and is beyond this grade. 106
Separating Mixtures. Name: Class:
Separating Mixtures Name: Class: Directions: Match the words with the big ideas by writing the letter beside the idea. Use the same words in the short article below. Use key words and phrases from the
More informationIGCSE (9-1) Edexcel - Chemistry
IGCSE (9-1) Edexcel - Chemistry Principles of Chemistry Element, Compounds and Mixtures NOTES 1.8: Understand how to classify a substance as an element, compound or mixture Classifications: S Class Element
More informationMethods of purification
Methods of purification Question Paper 1 Level IGSE Subject hemistry (0620/0971) Exam oard ambridge International Examinations (IE) Topic Experimental techniques Sub-Topic Methods of purification ooklet
More informationPhysical Science Review Sheet Matter & Physical Properties
Name: Date: 1. The four diagrams below model the results of mixing atoms of different substances. Each atom is represented by a different symbol. Which diagram correctly models a chemical change? 4. Base
More informationExperimental techniques
Experimental techniques 2.1 Measurement Apparatus used in the lab: Name Use Picture Beaker Used to hold liquids Burette Used to add accurate volumes of liquid Conical Flask Used to hold liquids Crystallizing
More informationMIXTURES, COMPOUNDS, & SOLUTIONS
MIXTURES, COMPOUNDS, & SOLUTIONS As with elements, few compounds are found pure in nature and usually found as mixtures with other compounds. A mixture is a combination of two or more substances that are
More information2018 Version. Separating Mixtures Junior Science
2018 Version Separating Mixtures Junior Science 6a Solutions are made from a solute dissolved in a solvent Solution (saltwater) Solute (salt) Solvent (water) A solution is made up of a solvent and a solute.
More informationMixtures 1 of 38 Boardworks Ltd 2016
Mixtures 1 of 38 Boardworks Ltd 2016 Mixtures 2 of 38 Boardworks Ltd 2016 Pure and impure substances 3 of 38 Boardworks Ltd 2016 All materials can be classified as either a pure substance or an impure
More informationIGCSE(A*-G) Edexcel - Chemistry
IGCSE(A*-G) Edexcel - Chemistry Principles of Chemistry Atoms NOTES 1.8 Describe and explain experiments to investigate the small size of particles and their movement including: Dilution of coloured solutions
More information2 nd exam of the 1 st term for 2 nd ESO G. 1. Look at the following picture:
2 nd exam of the 1 st term for 2 nd ESO G Name: 1. Look at the following picture: Date: What is the name of the separation technique that you see? What type of substances you separate with this technique?
More information1. (a) The diagrams below show the arrangement of atoms or molecules in five different substances A, B, C, D and E.
1. (a) The diagrams below show the arrangement of atoms or molecules in five different substances A, B, C, D and E. Each of the circles, and represents an atom of a different element. Give the letter of
More informationMatter and materials. 2.2 Methods of separation. A mixture of oil and water is called an emulsion. Substances used for mixture
Substances used for mixture State of substances used for mixture 2. Cold drink concentrate and water Observations: Describe the mixture according to a) appearance; b) colour; and c) clarity. Mixtures can
More informationUniversal Indicator turns green. Which method is used to obtain pure solid X from an aqueous solution? A. mixture
1 The results of some tests on a colourless liquid X are shown. oiling point = 102 Universal Indicator turns green What is X? ethanol hydrochloric acid pure water sodium chloride (salt) solution 2 blue
More informationUNIT 3 CLASSIFYING MATTER. Techniques to separate homogeneous mixtures: Techniques to separate heterogeneous mixtures:
UNIT 3 CLASSIFYING MATTER 1. Classifying matter 2. Separation techniques Techniques to separate homogeneous mixtures: Crystallisation Distillation Chromatography Techniques to separate heterogeneous mixtures:
More informationNaming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride
Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second
More informationName Class Date. How do mixtures differ from elements and compounds? How can mixtures be separated? What are solutions?
CHAPTER 4 3 Mixtures SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do mixtures differ from elements and compounds?
More informationSEPARATION TECHNIQUES
SEPARATION TECHNIQUES If a substance does not dissolve in a solvent, we say that it is insoluble. For example, sand does not dissolve in water it is insoluble. Filtration is a method for separating an
More informationQUESTION BANK FOR SA-1 ( ) SUBJECT - CHEMISTRY CLASS IX
QUESTION BANK FOR SA-1 (2015-16) SUBJECT - CHEMISTRY CLASS IX CH-1 Matter in our surroundings QThe smell of hot sizzling food reaches us several metres away. Why? Q In gases, particles vibrate. 1. about
More informationGeneral Chemistry I CHEM-1030 Laboratory Experiment No. 2 Physical Separation Techniques
General Chemistry I CHEM-1030 Laboratory Experiment No. 2 Physical Separation Techniques Introduction When two or more substances that do not react chemically are blended together, the components of the
More informationMinneapolis Community and Technical College. Separation of Components of a Mixture
Minneapolis Community and Technical College Chemistry Department Chem1020 Separation of Components of a Mixture Objectives: To separate a mixture into its component pure substances. To calculate the composition
More information5072 CHEMISTRY (NEW PAPERS WITH SPA) TOPIC 1: EXPERIMENTAL CHEMISTRY 5067 CHEMISTRY (NEW PAPERS WITH PRACTICAL EXAM) TOPIC 1: EXPERIMENTAL CHEMISTRY
5072 CHEMISTRY (NEW PAPERS WITH SPA) TOPIC 1: EXPERIMENTAL CHEMISTRY 5067 CHEMISTRY (NEW PAPERS WITH PRACTICAL EXAM) TOPIC 1: EXPERIMENTAL CHEMISTRY SUB-TOPIC 1.2 METHODS OF PURIFICATION AND ANALYSIS LEARNING
More informationAtoms And The Periodic Table
Tick one box to choose the correct answer 1) What elements are found in the compound water (H 2 O)? Hydrogen and oxygen Helium and oxygen Hydrogen and nitrogen 2) Which of the following is a metal element?
More informationName Class Date. How do mixtures differ from elements and compounds? How can mixtures be separated? What are solutions?
CHAPTER 3 3 Mixtures SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do mixtures differ from elements and compounds?
More informationStation 1 Water is a polar molecule and has a very unique structure
Station 1 Water is a polar molecule and has a very unique structure A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is
More informationUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary Education
*0367948514* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary Education CHEMISTRY 06/61 Paper 6 Alternative to Practical May/June 12 1 hour Candidates
More informationEXPERIMENT #4 Separation of a Three-Component Mixture
OBJECTIVES: EXPERIMENT #4 Separation of a Three-Component Mixture Define chemical and physical properties, mixture, solubility, filtration, sublimation, and percent Separate a mixture of sodium chloride
More information3 Mixtures. How do mixtures differ from elements and compounds? How can mixtures be separated? What are solutions, and how are they characterized?
CHAPTER 5 3 Mixtures SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do mixtures differ from elements and compounds?
More informationCHEMISTRY CORE PRACTICALS
CHEMISTRY CORE PRACTICALS Science (9-1) Combined Science / Chemistry Core Practicals www.chemistryinfo.co.uk Modified 23/03/2018 (MJB) Core Practical INDEX Paper 1 Paper 2 CP1a: Topic: 2.11 Investigate
More informationSubstances and Mixtures:Separating a Mixture into Its Components
MiraCosta College Introductory Chemistry Laboratory Substances and Mixtures:Separating a Mixture into Its Components EXPERIMENTAL TASK To separate a mixture of calcium carbonate, iron and sodium chloride
More informationAnswers. Mixtures. Year 7 Science Chapter 4. p75. p77. p79
Answers Mixtures Year 7 Science Chapter 4 p75 p77 p79 1 A pure substance has a definite and consistent composition. Pure water is a pure substance consisting only of water atoms (H 2 O). 2 Pure salt is
More informationCHAPTER-2 NCERT SOLUTION
CHAPTER-2 NCERT SOLUTION Page no. 15 Question 1: What is meant by a pure substance? Answer 1: A pure substance is the one that consists of a single type of particles, i.e., all constituent particles of
More informationChemical Reactions: The Copper Cycle
1 Chemical Reactions: The Copper Cycle ORGANIZATION Mode: pairs assigned by instructor Grading: lab notes, lab performance and post-lab report Safety: Goggles, closed-toe shoes, lab coat, long pants/skirts
More informationUnit 6M.3: Changing materials
Unit 6M.3: Adding materials to water. Chemical reactions Skill you will use: Classifying Observing Predicting By the end of this unit you should: Know that when substances are added to water, some will
More informationEXTRA CREDIT PAGES K
Mixtures (13K) EXTRA CREDIT PAGES 13-14 K Elements and compounds are pure substances, but most of the materials you see every day are not. Instead, they are mixtures. A mixture is made of two or more substances
More informationName: 1. Which of the following is probably true about 300 ml of sand and 300 ml of water?
Name: Jaguar Review #2 Physical Sciences Benchmark A: Relate uses, properties and chemical processes to the behavior and/or arrangement of the small particles that compose matter. 1. Which of the following
More informationYear 10 practice questions Chemistry
Year 10 practice questions Chemistry 1 Q1. Substances can be classified as elements, compounds or mixtures. (a) Each of the boxes in the diagram represents either an element, a compound or a mixture. (i)
More informationApplications in Forensic Science. T. Trimpe
Applications in Forensic Science T. Trimpe 2006 http://sciencespot.net/ What is chromatography? From Wikipedia... Chromatography (from Greek word for chromos for colour) is the collective term for a family
More informationEdexcel GCSE Chemistry. Topic 2: States of matter and mixtures. Methods of separating and purifying substances. Notes.
Edexcel GCSE Chemistry Topic 2: States of matter and mixtures Methods of separating and purifying substances Notes 2.5 Explain the difference between the use of pure in chemistry compared with its everyday
More informationExperiment 24. Chemical recycling of poly(ethylene) terephthalate (PET)
Methods of pollution control and waste management Experiment 24 Chemical recycling of poly(ethylene) terephthalate (PET) Manual Department of Chemical Technology The aim of this experiment is to gain knowledge
More informationStates of matter. Particles in a gas are widely spread out and can both vibrate and move around freely. They have the most energy of the three states.
States of matter Particles in a solid are closely packed and can vibrate but cannot move around, they have low energies. Particles in a liquid are still closely packed, but can both vibrate and move around
More informationQuestion 1: What is meant by a pure substance? A pure substance is the one that consists of a single type of particles, i.e., all constituent particles of the substance have the same chemical nature. Pure
More informationWhat is Science? Science is both a collection of knowledge and the process for building that knowledge.
Introduction to Science Junior Science What is Science? Science is both a collection of knowledge and the process for building that knowledge. Science asks questions about the natural world and looks for
More informationMaking Sense of Matter Study Guide. Matter is anything that takes up space and has mass.
Making Sense of Matter Study Guide Matter is all around us everything is made of matter. Matter is anything that takes up space and has mass. We can classify objects by their physical properties. Physical
More informationCAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education
Centre Number Candidate Number Name CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY 0620/06 Paper 6 Alternative to Practical Candidates answer on
More information5 th GRADE PHYSICAL AND CHEMICAL TESTS
5 th GRADE PHYSICAL AND CHEMICAL TESTS Summary: Students investigate 5 unknown white powders. They gather clues by observing the physical and chemical changes of the powders. At the end of the activity,
More informationIn the exam you will be asked to tackle questions such as the one below.
Get started AO3 2 Preparing salts This unit will help you to plan, describe and understand an experiment to prepare a salt. In the exam you will be asked to tackle questions such as the one below. Exam-style
More informationEXPERIMENTS. Testing products of combustion: Reducing Copper(III) Oxide to Copper. Page 4
APPARATUS Page 2 APPARATUS Page 3 Reducing Copper(III) Oxide to Copper EXPERIMENTS Page 4 Testing products of combustion: EXPERIMENTS Showing that oxygen and water is needed for rusting iron Page 5 Showing
More informationSolutions, Suspensions, and Colloids
Movie Special Effects Activity 3 Solutions, Suspensions, and Colloids GOALS In this activity you will: Explore different ways that materials can be mixed together to make new materials. Test some materials
More informationFrom Which Planet is the Soil Sample From?
Teacher From Which Planet is the Soil Sample From? NGSSS: SC.912.P.8.2: Differentiate between physical and chemical properties and physical and chemical changes of matter. Purpose of Lab/Activity: To separate
More informationHow can homogeneous and heterogeneous mixtures be. 1. classified? 2. separated?
How can homogeneous and heterogeneous mixtures be 1. classified? 2. separated? 1. HETEROGENEOUS MIXTURE 2. COLLOID 3. EMULSION 4. SUSPENSION 5. FILTRATION 6. TYNDALL EFFECT 7. HOMOGENEOUS MIXTURE 8. SOLUTION
More informationMATTER. Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and takes up space.
MATTER Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and takes up space. Properties of Matter Physical Properties Can be observed without changing
More informationmixtures reflect What properties could you use to separate the ingredients in these mixtures?
reflect Every day, we interact with many different kinds of matter. We look at it, feel it, taste it, and even breathe it. Sometimes different types of matter are combined. For example, a salad might have
More informationTo understand concept of limiting reagents. To learn how to do a vacuum filtration. To understand the concept of recrystallization.
E x p e r i m e n t Synthesis of Aspirin Experiment : http://genchemlab.wordpress.com/-aspirin/ objectives To synthesize aspirin. To understand concept of limiting reagents. To determine percent yield.
More informationSCI-5 Deane_Units1_2_SOL_Practice_Test Exam not valid for Paper Pencil Test Sessions
SCI-5 Deane_Units1_2_SOL_Practice_Test Exam not valid for Paper Pencil Test Sessions [Exam ID:1PEFE2 1 Directions: Type your answer in the box. Use a whole number. What is the mass of the rock shown? g
More informationMixtures. Part 2 Add 50 ml of water (one full syringe) to each cup. Stir and observe. Write your observations on the opposite page.
Mixtures Part 1 Prepare three cups. Put 1 level spoon (5 ml) of each solid material in each cup. Observe the three solid materials. Fill in the property chart below. Color Texture Particle shape Particle
More informationEXPERIMENT 7: THE LIMITING REACTANT
EXPERIMENT 7: THE LIMITING REACTANT PURPOSE To find the ratio of moles of a reactant to moles of a product of a chemical reaction. To relate this ratio to the coefficients of these substances in the balanced
More informationFoundations of Chemistry
Foundations of Chemistry Physical Properties Physical Properties As you read in Lesson 1, the arrangement of atoms determines whether matter is a substance or a mixture. The arrangement of atoms also determines
More information1 st Semester Exam Study Guide 1.) Which of the following is NOT a compound? Explain why. a. H2O b. O2
1 st Semester Exam Study Guide 1.) Which of the following is NOT a compound? Explain why. a. H2O b. O2 2.) A chemist has discovered what she thinks is a new molecule. In order for it to be a molecule,
More informationName: Class: Date: Question #1 The image shows the atomic arrangements of four different substances.
Name: Class: Date: Question #1 The image shows the atomic arrangements of four different substances. Which are compounds and why? A) hydrogen because it contains only one kind of atom B) methane because
More information4-1 / 5-1 Atomic structure and the periodic table Chemistry and Trilogy
4- / 5- Atomic structure and the periodic table Chemistry and Trilogy.0 A student separated a mixture of two alcohols, ethanol (boiling point 78 C) and butanol (boiling point 8 C). The apparatus is shown
More informationPhysical and Chemical Properties of Matter Lab
Physical and Chemical Properties of Matter Lab Purpose To introduce the student to physical and chemical properties of matter and their use for the identification and separation of compounds. Each student
More informationFoundation Support Workbook AQA GCSE Combined Science Chemistry topics. Sunetra Berry
Foundation Workbook AQA GCSE Combined Science Chemistry topics Sunetra Berry 224708 Foundation Workbook_Sample_Chemistry.indd 1 4/22/16 4:17 PM Contents Section 1 Atomic structure and the periodic table
More informationSc1 Collecting & using evidence, making observations, evaluating & presenting results, making fair tests and comparisons, identifying patterns
A collection of experiments in which pupils carefully study and analyse evidence to solve a crime. Could be used as an off-timetable activity for a Science Week etc. Curriculum Links: Sc1 Collecting &
More informationW X gas liquid solid Y Z. C X and Y D Y and Z X Y Z. C Z to X D Z to Y
1 In which changes do the particles move further apart? W X gas liquid solid Y Z W and X W and Z X and Y Y and Z 2 iagrams X, Y and Z represent the three states of matter. X Y Z Which change occurs during
More informationEXPERIMENT: LIMITING REAGENT. NOTE: Students should have moles of reactants in DATASHEET converted into masses in grams prior to the lab period.
Revised 12/2015 EXPERIMENT: LIMITING REAGENT Chem 1104 Lab NOTE: Students should have moles of reactants in DATASHEET converted into masses in grams prior to the lab period. INTRODUCTION Limiting reactant
More informationCopyright 2015 Edmentum - All rights reserved.
Study Island Copyright 2015 Edmentum - All rights reserved. Generation Date: 03/16/2015 Generated By: Kristina Brown 1. Edgar is stranded on an island surrounded by an ocean of salt water. He is thirsty,
More informationElements, Compounds and Mixtures
L. R. & S. M. VISSANJI ACADEMY SECONDARY SECTION - 2016-17 CHEMISTRY - GRADE: VIII Elements, Compounds and Mixtures ELEMENTS An element is a pure substance which cannot be converted into anything simpler
More informationAnalytical Chemistry National 4 and 5
Analytical Chemistry National 4 and 5 Analytical Chemistry is a subject which spans almost all areas of Chemistry. It is concerned with identifying, measuring and separating the chemicals present in a
More informationTHE CATHOLIC UNIVERSITY OF EASTERN AFRICA A. M. E. C. E. A
THE CATHOLIC UNIVERSITY OF EASTERN AFRICA A. M. E. C. E. A MAIN EXAMINATION P.O. Box 62157 00200 Nairobi - KENYA Telephone: 891601-6 Fax: 254-20-891084 E-mail:academics@cuea.edu JANUARY APRIL 2014 TRIMESTER
More informationLab Activity on Sedimentary Processes
Lab Activity on Sedimentary Processes 2002 Ann Bykerk-Kauffman, Dept. of Geological and Environmental Sciences, California State University, Chico * Objectives When you have completed this lab activity,
More informationIntroduction to Work in Laboratory
INSTITUTE OF MEDICAL BIOCHEMISTRY AND LABORATORY MEDICINE Introduction to Work in Measuring volumes, filtration, centrifugation, solubility, separation Practical in Medical Biochemistry General Medicine
More informationIn your activity, you will use a chemical reaction and a filter to remove some very small dissolved particles.
Lesson 3 Forming a precipitate S T U D E N T A C T I V I T Y S H E E T Name: Meet the scientist Country: Republic of Peru Scientist: Adriana Garcia Sera, from Fiji, told you about the problems of ocean
More informationMr. Mott. Polar/Nonpolar and Water Lab. Introduction:
AP Biology Mr. Mott (source: Mrs. Miriello) Polar/Nonpolar and Water Lab Name Class Period Introduction: Solutions are homogeneous mixtures comprised of a solute (the dissolved substances) mixed in a solvent
More informationStates of matter. 22 Science Alive for VELS Level 5
States of matter E verything around you is made of matter. Anything that has mass and takes up space is matter. The air we breathe, the water we drink and the food we eat are all different types of matter.
More informationT E M P E R A T U R E, A C I D S, B A S E S, M I X T U R E S
Review Session 3 TEMPERATURE, A CIDS, BASES, M IXTURES Properties of Matter Some are specific to only one substance This is a characteristic property Density, Boiling Point, Melting Point Some can be shared
More informationKnox Academy Science Department. S1 Science
Knox Academy Science Department S1 Science Our Material World Part 2 Write on Booklet 1 1. Chemical Elements the Builders How many materials are there? There are millions upon millions of different materials,
More informationProcedure: 1. On your wax paper, place 5-10 drops of water in one area. 3. What do you notice the water does on the wax paper?
Properties Lab NAME: Date: Background: is everywhere. It makes up about 3/4ths of the surface of the earth. It makes up 50-95% of the weight of living organisms. It is in the air we breathe, the sinks
More informationusing simple distillation and paper chromatography practical to obtain a
2.11 Core practical: Investigate the composition of inks using simple distillation and paper chromatography Paper 1 & 2 Topic 1 What do you need to be able to do? Practical: Description Investigate the
More informationHERZLIA MIDDLE SCHOOL
NAME TEACHER S COMMENT TEACHER CLASS PARENT S COMMENT MARK PERCENTAGE PARENT SIGNATURE HERZLIA MIDDLE SCHOOL NATURAL SCIENCES GRADE 7 MID YEAR EXAMINATION 7 JUNE 2016 TIME: 90 Minutes MARKS: 145 1 Grade
More informationToday is: Friday, October 21st
Today is: Friday, October 21st 10/21/2016 #followyourdreamsfriday 1. What are some of your biggest goals in life? 2. Which of the following is an example of a chemical change? Why? Justify your answer.
More informationBy the end of this experiment the student should have learned:
Experiment 3 SUBSTANCES, REACTIONS MIXTURES, AND Learning Objectives By the end of this experiment the student should have learned: 1. To distinguish elements from compounds. 2. To distinguish heterogeneous
More informationLondon Examinations IGCSE
Centre No. Paper Reference Surname Initial(s) Candidate No. Signature Paper Reference(s) 4335/03 4437/08 London Examinations IGCSE Chemistry 4335 Paper 3 Science (Double Award) 4437 Paper 8 Foundation
More informationSupply List. General Science II. Released Glynlyon, Inc
N Supply List General Science II 2012 Glynlyon, Inc Released 4-1-12 Table of Contents UNIT 1: SCIENCE AND SOCIETY... 1 UNIT 2: STRUCTURE OF MATTER (PART 1)... 1 UNIT 3: STRUCTURE OF MATTER (PART 2)...
More informationMatter Questions. Pure Substances Questions. 1. How is matter classified? 2. What is a pure substance? Give an example of a pure substance.
Unit 6 ~ Learning Guide Name: Instructions: Using a pencil, complete the following notes as you work through the related lessons. Show ALL work as is explained in the lessons. You are required to have
More information--j--- water. "..-:T-lc---- salt cry stal s. '--'--'-~"""'>;:"L...;l""""----' the crystals dissolve.
- --j--- water '--'--'-~"""'>;:"L...;l""""----' "..-:T-lc---- salt cry stal s (a) Describe how the appearance of the contents the \/'-'",",'''''1 over a period of time. (b) Name the nrr,,,p',,,, that occurs
More informationINTRODUCTION TO LESSON CLUSTER 5
INTRODUCTION TO LESSON CLUSTER 5 EXPLAINING DISSOLVING A. Lesson Cluster Goals and Lesson Objectives Goals Students should be able to explain dissolving of solids in liquids in terms of molecules. Lesson
More informationTo dissolve or not dissolve
To dissolve or not dissolve What s the mystery? Domain(s) Subdomain keywords Two glasses are half full of clear liquid. When a teaspoon of salt is added to both and stirred, it dissolves in one but not
More informationFinal Review Graphs and Charts TWO Page 1 of 35
TEST NAME:Final Review Graphs and Charts TWO TEST ID:1086907 GRADE:11 Eleventh Grade 12 Twelfth Grade SUBJECT:Life and Physical Sciences TEST CATEGORY:School Assessment Final Review Graphs and Charts TWO
More informationMINISTRY OF EDUCATION AND HUMAN RESOURCES, TERTIARY EDUCATION AND SCIENTIFIC RESEARCH MAURITIUS EXAMINATIONS SYNDICATE. CHEMISTRY OCTOBER hour
MINISTRY OF EDUCATION AND HUMAN RESOURCES, TERTIARY EDUCATION AND SCIENTIFIC RESEARCH MAURITIUS EXAMINATIONS SYNDICATE NATIONAL ASSESSMENT AT FORM III NAME SCHOOL NAME CLASS/SECTION CHEMISTRY OCTOBER 2016
More informationWhich particle diagram represents molecules of only one compound in the gaseous phase?
Name: 1) Which species represents a chemical compound? 9114-1 - Page 1 NaHCO3 NH4 + Na N2 2) 3) 4) Which substance represents a compound? Co(s) O2(g) CO(g) C(s) Which terms are used to identify pure substances?
More informationGRADE 7 SCIENCE. Separating Solutions. Page 277
GRADE 7 SCIENCE Separating Solutions Page 277 REMEMBER... Something is a MIXTURE if it contains two (or more) substances that are not chemically joined together. The substances in a mixture can often be
More informationGeneral Science II General Science II
2017-2018 General Science II General Science II 2017 Glynlyon, Inc. Table of Contents UNIT 1: SCIENCE AND SOCIETY... 1 UNIT 2: STRUCTURE OF MATTER (PART 1)... 1 UNIT 3: STRUCTURE OF MATTER (PART 2)...
More informationName: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.
Name: Class: Date: Chapter 1 and 2 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. One difference between a mixture and a compound is that.
More informationReview Topic 8: Phases of Matter and Mixtures
Name: Score: 24 / 24 points (100%) Review Topic 8: Phases of Matter and Mixtures Multiple Choice Identify the choice that best completes the statement or answers the question. C 1. Soda water is a solution
More informationInvestigation 1: Separating Mixtures
5 th Science Notebook Mixtures and Solutions Investigation 1 Investigation 1: Separating Mixtures Name: Big Question: How are mixtures and solutions similar and different and how can they be separated?
More informationElements, compounds, Mixtures
Elements, compounds, Mixtures Model Answers 1 Level IGCSE(9-1) Subject Chemistry Exam Board Edexcel IGCSE Module Double Award (Paper 1C) Topic Principles of Chemistry Sub-Topic Booklet Elements, Compounds,
More informationDownloaded from
Science For Class IX Is Matter Around Us Pure (Q.1) Name the process which can be used to recover sugar from an aqueous sugar solution. (Q.2) What happens when a saturated solution is heated?
More information1. 2. Differentiate states of matter. Arrangement of Particles
Lesson 2 Predict three facts that will be discussed in Lesson 2 after reading the headings. Record your predictions in your Science Journal. Definition: Define physical property, and give two examples.
More informationScience For Class IX Is Matter Around Us Pure
Science For Class IX Is Matter Around Us Pure (Q.1) Name the process which can be used to recover sugar from an aqueous sugar solution. (Q.2) What happens when a saturated solution is heated? (Q.3) Name
More informationIES LAURETUM SCIENCE NAME. MIXTURES, ELEMENTS AND COMPOUNDS
IES LAURETUM SCIENCE NAME. MIXTURES, ELEMENTS AND COMPOUNDS 1 CONTENTS 1. INTRODUCING MIXTURES 2. CLASSIFYING MIXTURES 3. SEPARATING MIXTURES 4. WHAT ARE SOLUTIONS? 5. PURE SUBSTANCES: ELEMENTS AND COMPOUNDS
More information