Study Guide
You may use this study guide on the test. You will not be able to use the book or any other materials or people.
Section A
1. What is the law of conservation of matter?
2. Complete an atom inventory of the following equations:
BaO + H2O_ Ba(OH)2
NaClO3 _ NaCl + O2
3. Explain why the phrases "using up" and "throwing away" are inaccurate from a chemical viewpoint.
4. List two benefits of discarding less and recycling more waster material.
5. What advantages does reuse have over recycling?
6. List four renewable resources and four non-renewable resources.
Section B
7. How can you use a chemical property or a physical property to distinguish between two materials?
8. Give two examples of chemical properties.
9. Give two examples of physical properties.
10. Why are non-metals not good to use for wiring?
11. Given the correct formulas Al2O3 and BeCl2, predict formulas for compounds containing:
A. Mg & F
B. B & S
12. Decide whether each grouping of three elements belongs to the same chemical family. If not, circle the element that does not belong with the other two.
A. Sodium, potassium, magnesium
B. Helium, neon, argon
C. Oxygen, arsenic, sulfur
D. Carbon, nitrogen, phosphorous
13.If two different metals are used in construction, why is it desirable to separate them with a nonconducting material? (Hint: Statue of Liberty)
Section C
14. Make an atom inventory, then balance the equations (if necessary).
A. Pb + HNO3 _ Pb(NO3)2 + H2
B. Al + ZnCl2_ Zn + AlCl3
C. H2O +CaO _ Ca(OH)2
15. Where do all of our natural resources come from?
16. Find the molar mass:
A. N
B. N2
C. NaOH
D. CaSO4
17. Given this equation:
2 C8H18 + 25 O2_ 16 CO2 + 18 H2O
A. How many moles of C8H18 are there?
B. How many moles of O2 are in the reactants?
C. How many moles of CO2 are in the products?
D. How many moles of H2O are in the products?
18. How do balanced chemical equations illustrate the law of conservation of matter?
Section D
19. Why is metal recycling important?
20. What characteristics of copper make it suitable for wiring?
21. Find the percent metal (by molar mass) in each compound:
A. ZnCl2
B. AlCl3
C. Pb(NO3)2
22. Would it be a good idea to stir a solution of PbNO3 with an iron spoon? Explain. HINT: See table on p. 140. (If I ask you this question on the test, I will provide the table.)
23. Consider the following equations:
Cu2+ + 2e- _ Cu
Cu _ Cu2+ + 2e-
Which equation represents reduction? Oxidation? Explain why.
24. In light of the Earth's limited natural resources, why is it important that scientists research different materials?
Questions? Comments??
Amanda Noland