Score True (T) or False (F) 1 pts, I pt. each) The energy difference between 2 c

Question

Score True (T) or False (F) 1 pts, I pt. each) The energy difference between 2 consecutive electronic shells increases with increasing Isotopes of an element have the same atomic # but different mass 8. 3. In general, elements of the same period have similar chemical properties. 4. Density is an extensive property of a substance. S. In general, metals have higher melting points than nonmetals 6. Dry ice vaporizing at room temperature is an example of chemical change. 7. Baking soda, NaHCO, is an example of pure compound. 8. Saline solution is an example of homogeneous mixture. 9. The higher the specific heat of a substance, more heat it takes to increase its tempe ure 10. The atomic radius of elements increases going across the same period from left to h. 1I. When one is using exact numbers in calculation in science, one needs to pay atter on to their contrit to significant figures in the final answers 12. In the net ionic equation of a chemical reaction, only spectator ions are shown. 13. A positive value corresponds to an exothermic process. 4. A strong acid is also a strong electrolyte. 5. The correct name for the formula, CuO, is copper (D) oxide. 16. As altitude increases, atmospheric pressure increases. 17. Dry ice vaporizing is an endothermic process 18. The frequency of an EM wave is directly related to its energy 19. If the volume of a gas sample decreases to half of its original volume, the essure of gas shou two fold, assuming other conditions remain the same. 20. Gases deviate from ideal gas behavior under condition of low pressure. 21.40% glucose solution is a weak electrolyte. Fill in the blank/MC questions/short work problems 22, Cr-contains (a) protons, (b) neutrons, and (c) electrons. (3) A, B.-10 C.262 K 23. Of the three temperature listed above, give the letter that comes"-ds to the warmest tem 24. Of the three temperature listed above, give the letter that 5. to the coldest temp The empirical formula of a compound with molecular formula Cin Has0s is

Explanation / Answer

1 F

2 T

3 F

4 F

5 T

6 F

7 T

8 T

9 T

10 F

11 T

12 F

13 F

14 T

15 F

16 F

17 T

18 T

19 T

20 F

21 F

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