1. Starter: 122 121 Test Review 12/3/2015 Practice/Application /Connection/Exit : Test Review. Glue here before test 12/3/2015 Test Review EQ: How can comparing and contrasting help me to understand how matter physically or chemically changes?

2. Starter Atoms Nucleus ProtonsNeutrons Positive Chargeno Charge Electron Cloud Electrons Negative Charge

3. September 28, 2015 AGENDA 8.5 A B C I will be able to evaluate my knowledge of information over the periodic table and atoms by writing and reading on a review sheet. 1 Starter 2. Review sheet

4. Table of Contents DateLecture/ Activity/ Lab Page 11/19 Minerals and their Properties 113-114 11/30 Types of Chemical Reactions 115-116 12/1 Chemical Reactions Activity 117-118 12/2 Chemical Reactions lab 119-120 12/3 Chemistry Test Review 121-122

5. Question 1 2 Na + 1 Cl 2 → 2NaCl In the equation above, what is the coefficient of the chlorine molecule? 1

6. Question 2 2 Na + 1 Cl 2 → 2NaCl In the equation above, what is the subscript of the chlorine molecule? 2

7. Question 3 New substances formed during a chemical reaction are indicated on which side of the equation and what are they called?— Right and called products

8. Question 5 What does the arrow in the equation mean? Yield

9. Question 6 All chemical equations must be balanced. This means that the same number of atoms of each of the elements must be found in both the reactants and the products of the reaction. Which scientific law does this illustrate? Law of Conservation of Mass

10. 7 A student mixes two clear solutions. What are the evidences that a chemical reaction is taking place? Gas Formation Sound/ light EnergyChange Precipitate Color Change

11. Question 8 A student placed 2 grams of baking soda in a balloon and 100 mL of vinegar in an Erlenmeyer flask. After stretching the opening of the balloon across the neck of the flask, the student raised it to dump the baking soda into the flask. He immediately observed foaming bubbles in the flask and the balloon began to expand. What is the conclusion that the student could make based on the information above? A chemical reaction has taken place ( gas produced)

12. Question 9 Which of the following equations follows the Law of Conservation of Mass? F 3H 2 O → 3H 2 + 3O 2 G C + 4H 2 → CH 4 H 2Na + Cl → NaCl J C 2 H 4 + 3O 2 → 2CO 2 + 2H 2 O

13. Question 10 Which of these equations shows rust, Fe 2 O 3, forming when oxygen, O 2, reacts with iron, Fe? A 2Fe 2 O 3 → 3O 2 + 4Fe B 4Fe → 3O 2 + 2Fe 2 O 3 C 2Fe 2 O 3 + 4Fe → 3O 2 D 3O 2 +4 Fe → 2Fe 2 O 3

14. Question 11 What are the electrical charges of the subatomic particles of an atom?

15. Question 12 Put theses in order from least to greatest mass… atom, electron, proton Electron Proton Atom

16. Question 13 What best completes the graphic organizer above? Evidence of a chemical reaction

17. Question 14 Which substance in the chart above as the greatest number of atoms in each molecule is — F iron oxide G sodium chloride H calcium carbonate J magnesium silicate

18. Question 15 Based on the information in the chart, how do you know a chemical reaction has occurred? A Products release more energy than reactants. B Reactants form from the atoms that make up products. C Atoms that make up reactants rearrange into new products. D There are more atoms in the products than in the reactants.

19. Question 16 CH 4 + O 2 CO 2 + H 2 O

20. Question 17

21. Question 18 Glass has a hardness of 5.5. According to Mohs’ hardness scale, which mineral will scratch glass? Gypsum Fluorite Quartz Talc

22. Question 19 According to the table, the mineral calcite is softer than— a knife blade and gypsum a copper coin and fluorite a fingernail and feldspar a knife blade and talc

23. Starter: 122 121 Test Review 12/3/2015 Practice/Application /Connection/Exit : Test Review. Glue here before test 12/3/2015 Test Review EQ: How can comparing and contrasting help me to understand how matter physically or chemically changes?