Multiple Choice
Most teachers will agree that a perfect answer key is rare. The reasons are as numerous as the errors: typos, strained eyes, misread questions, etc. If your answers do not agree, consult a good chemistry teacher about any questions you might have. I would appreciate knowing about any errors that you might find.
Short Answer
1. time X speed
2. 20 mi/hr
3. 1/12 ft; 1/50 M; 1.5 in; 3 cM
4. figs= rads/quarks
5. light clothes because it is very hot out
6. H2O
7. 50
8. 2000.0
9. 3 X 108
10. right; 3 places left
11 1.59
12 $10,000
13. liquids
14 (a) 1/3; (b0 2/3; (c) 4/5; (d) 1/4; (e) 3/4
15 a
16 b
17 16.7 %
18 Yoko=28; Xavier=58
19 x=yz-4
20 single pure substance
21 144
22 16
23. No easy answer. All contain some pesticides, either natural ones or artificial
24. Depends on how much was there. All food contains some radioactive atoms.
25. linear with a slope of 60
26. linear with a slope of zero
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