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Questions for Regents Practice Matter, Energy and Change

Answers Topic 1

1. 3 10. 4 19. 23 and 24.

2. 3 11. 3

3. 1 12. 2 20.

4. 3 13. 3
21. Molecules of N 2 liquid
5. 2 14. 1 are closer together
than molecules of
6. 2 15. 4
N 2 gas.
7. 1 16. 3
22. It does not show all
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8. 2 17. 2 of the bonds, nor
molecular shapes,
9. 2 18. 3
nor electrons.
Answers may vary.
0
25. 53 C
26. Temperature is

increasing
27. 915 J

Mattar, Energy and Change: Additional Materials

Answers to Questions

28) 2.15 mol
29) 2.03 L

30) 565.5 K

31) Faster: CO Slowest: SO2

32) 1.90 times faster

33) 1.13 times faster
34) 132.3 g/mol

35) 162 g/mol

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