Introduction to Chemistry

1. Introduction to Chemistry Substances, Mixtures and Solutions

2. Day 3 March 11 DRQ : What is a mixture? Make an educated guess about the difference between a mixture and element. Activities: • DRQ\Review DRQ • Demonstrations • Review Chapter 9 pre-reading activity • Vocabulary Homework: Crossword puzzle

3. DRQ: What is a mixture? Make an educated guess about the difference between a mixture and substance. • A mixture is a combination of two or more elements or compounds • The difference between a mixture and a substance is that a mixture is a combination of different substances. • A substance is a “pure” sample of a compound or an element

4. Demonstrations • Substances • Salt (NaCl) • Sugar (C12H22O11 ) • Distilled water (H2O) • Sand (SiO2 Silicon dioxide) • Mixtures • Salt water • Sugar water • Sand and water

5. Vocabulary for 9.1 • Substance Matter that is an element or a compound • Element Substance in which all the atoms are alike • Compound Substance made of the combined atoms of two or more elements • Mixture: Two or more substances together • Heterogeneous mixture A mixture in which different parts can be easily distinguished. • Homogeneous mixture A mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution

6. Vocabulary for 9.1 cont. TYPES OF MIXTURES • Solution A homogeneous mixture containing particles so tiny that they cannot be seen even with a microscope; particles in a solution don’t settle and don’t scatter light • Suspension A heterogeneous mixture containing a liquid in which larger particles eventually settle out. • Colloid A heterogeneous mixture containing tiny particles that never settle out; examples milk and gelatin

7. Vocabulary for 15.1 • Solute The substance being dissolved in a solvent • Solvent The substance that dissolves a solute • Solubility The amount of a substance (solute) that will dissolve in a solvent • Saturated A solution that has dissolved all the solute it can normally hold at a specific temperature • Unsaturated A solution that is capable of dissolving more solute at a specific temperature • Supersaturated An unstable solution that contains more solute than a saturated solution can at that

8. Play on Quizlet • Go to Mrsdoughertys.wikispaces.com or • http://quizlet.com/794051/mixtures-compounds-and-solutions-flash-cards/

9. Day 4 March 12 DRQ: Pass around labeled items: copper foil, salt, Aluminum foil, chalk, granite, sugar water. Get a copy of the data table, and classify each as an element, compound, heterogeneous mixture or a homogenous mixture. Activities: • DRQ\Review DRQ • Discussion questions • If you know the name of a substance how can you find out whether it is an element? • Cornell Notes for Chapter 9.1 pgs 246-250

10. DRQ # 13

11. Cool Supersaturated Solution Video 160 g solute Sodium Acetate Trihydrate Add 30 mL water solvent Heat to supersaturate solution Seed crystals to precipitate cool solution to crystallize

12. Discussion Questions • If you know the name of a substance how can you find out whether it is an element?

13. Cornell Notes • Pages 246-260 Keys to Success • Don’t forget study questions, words to know and the summary. • Use the headers to get the main points • Have complete thoughts in your notes and your summary If not finished in class - due tomorrow!

14. Day 5 March 13 • No DRQ • Take out your Cornell Notes and attach a rubric to them. • If you didn’t do your homework, start your notes now.

15. Grader: ___________________________ Binder owner: __________________Is their DRQ section complete? __< 50% ___ about 75% ______ about 90% _____ 100% • Notes Check if yes, nothing if no… • 8.1 Cornell Notes • Triangle • 8.3 Solids Liquids and Gases Notes/concept map • Matter and Temperature Study Guide • Behavior of Gases Notes • Gas Laws Chart • 8.5 Behavior of Fluids Cornell Notes • Uses of Fluids Study Guide • DRQ table and Concept Map • Mixtures, Compounds and Solutions Pre-reading • Compounds vs. Elements • 9.1 Cornell Notes • Vocab Section • 2 crossword puzzles Add up the check marks: _____________ out of 13 = _____________% DRQ = ___________% Notes and Vocab = _______________%

16. Grade each other’s notes • Quiz on 9.1 postponed to Monday • Binders Due Monday • Study Vocabulary • Fix/Complete Cornell Notes • Quiz will be final grade of Marking period

17. Day 4 March 20 • DRQ : On the front cart are two heterogeneous mixtures. A flinstones vitamin and “cheerios”. Both claim to have Iron in them. • How could we find out which has more Iron?

18. Day 4 March 20 • Activities • Review DRQ • Return/Review Quiz • Classwork/Homework • All Mixed UP

19. Day 5 March 23 DRQ: Explain three ways to separate a mixture. Activities: • DRQ\Review DRQ • Check Homework, Separating Mixtures (perform separation) • Begin Cornell Notes pgs 254-259 • Online Separation activity

20. DRQ: Explain three ways to separate a mixture. • Magnetism • Solubility • Size • Color • Texture • Shape THESE ARE ALL PHYSICAL PROPERTIES!

21. Day 6 March 24 DRQ : What is the difference between a physical change and a chemical change? Activities: • DRQ\Review DRQ • Ch 9.3 Chemical Changes • Review Differences between chemical and physical changes • Homework: Cornell Notes pgs 254-259

22. DRQ: What is the difference between a physical change and a chemical change? • In a physical change the matter doesn’t change or it is reversible. • A chemical change creates a new type of substance or is irreversible. The particles are broken apart and put back together differently, making a new substance.

23. Day 1 March 25 DRQ: As you know, energy cannot be created or destroyed. This is the law of conservation of energy. What do you infer the law of conservation of mass might be? Activities: • DRQ/Review DRQ • Cornell Notes/Review Notes • Study Guide…

24. DRQ: As you know, energy cannot be created or destroyed. This is the law of conservation of energy. What do you infer the law of conservation of mass might be? • The law of conservation of mass is that mass/matter is not created or destroyed, it is only changed.

25. Day 2 March 26 DRQ: Make a list of physical changes that can occur in matter. (How many can you think of?) Activities • DRQ/Return Notes/Collect Homework • Physical Changes - List • Chemical Changes and Conservation of Mass Demonstrations • Physical and Chemical Changes T chart activity • Lavoisier video clip Homework: Study for quiz tomorrow.

26. DRQ: Make a list of physical changes that can occur in matter. (How many can you think of?)

27. Antione Lavoisier and his wife, and research assistant, Marie-Anne Pierette Paulze

28. March 30 Day 4 DRQ: Open your book to page 416. Read about Types of Solutions. What are three types of solutions and an example of each? Activities: • DRQ\Review DRQ • Review Mini-Quiz on Physical and Chemical changes • Solute, Solvent discussion (15.1) • Notes on 15.1 Closure:15.1 Notes Summary Homework: How solutions form Study Guide

29. March 31 Day 5 DRQ: If you wanted to create a supersaturated solution, what would you have to do? Activities: • DRQ\Review DRQ • Lab activity: creating a solution, a saturated solution and a supersaturated solution. Closure:Cleanup and discussion Homework: Complete lab questions and illustrations

30. DRQ: If you wanted to create a supersaturated solution, what would you have to do? • Make a saturated solution. • A solution that dissolved all the solute it can hold at a certain temperature. • Add more solute. • Heat it • Because adding heat increases the amount of solute you can dissolve • Stir it