Basic Chemistry Questions: Let’s Get the Brain Stewing

Here are a series of chemistry nomenclature questions, along with questions about pressures, gas laws, and a little history about Charles, Dalton, Graham, and Boyle. Answers are at the bottom.

1. What are positive ions called?
2. What are negative ions called?
3. What are two types of bonds that hold compounds together?
4. Compounds that contain a metal will create what type of bond?
5. A ___________ bond uses a prefix method for naming compounds.
6. What type of bonds hold polyatomic ions together?
7. Metals bonded with polyatomic ions will create a compounds with which type of bond?
8. What type of bond can create a single molecule?
9. Why can oxide of iron have the formula Fe2O3 and FeO?

10. What is the proper name for each formula below:

  • AgOH
  • SiBR4
  • N2O4
  • Fe(NO3)2
  • CO
  • KH2PO4
  • PbF2
  • Na2CrO4
  • PCI5
  • As2S3
  • NH4C2H3O2
  • Cu2SO4
  • Li2O
  • SnCO3
  • P4O10

12. What is the proper formula for each compound below:

  • Aluminum chloride
  • Calcium bromide
  • Dinitrogen monoxide
  • Iron (III) oxide
  • Sodium bicarbonate
  • Lead (IV) nitrate
  • Mercuric sulfate
  • Carbon tetrachloride
  • Copper (I) phosphate
  • Calcium acetate
  • Iodine heptafluoride
  • Magnesium hydroxide
  • Ammonium sulfide
  • Carbon dioxide

True or False questions

13. Charles’ Law can be represented as PV=K
14. The value for pressure at standard conditions is 101.3kPa.
15. A temperature of -23K is equivalent to 250 degrees Celsius
16. Boyle’s law is an example of a direct proportion.
17. Doubling the volume of a gas at a constant temperature would change the pressure to 1/4 of the original pressure.
18. Boyle, Charles, and Dalton all have ties to the kinetic theory of gases.
19. The equation R=PV/nT, where R=8.3 kPa–L/mole K, is a representation of the ideal gas law.
20. Four moles of carbon dioxide gas and four moles of oxygen gas have the same mass.
21. The density of bromine gas at STP is 7.13 g/ml.
22. The volume of a 150 g sample of sulfur dioxide with a pressure of 745 torr and a temperature of 15 degrees Celsius is 5L.
23. Charles’ law represents an example of an inverse proportion.
24. Dalton is attributed to the law of partial pressures.
25. Absolute zero is equivalent to -273K.
26. When you solve a problem using the combined gas law, the pressure must be held constant.
27. Temperature determines the average kinetic energy of the molecules of a gas.
28. Standard volume of a mole of any gas is 22.4L.
29. An increase in the temperature of a gas will cause an increase in the density of the gas.
30. Graham’s law is about the diffusion rate of a gas.
31. The pressure on a container wall increases as the number of collisions on the walls of the container increases.

ANSWERS

1. cations
2. anions
3. ionic and covalent
4. ionic
5. covalent
6. covalent bonds
7. ionic bonds
8. covalent bonds
9. Iron is a transition metal that can form cations with a +2 or +3 charge. Because the total ionic charge has to equal zero, iron’s charge will vary based on what element (and how many atoms of that element) that it’s attached to.
10.
– silver hydroxide
– silicon tetrabromide
– dinitrogen tetraoxide
– iron (II) nitrate
– carbon monoxide
– potassium dihydrogen phosphate
– lead (II) flouride
– sodium chromate
– phosphorus pentaflouride
– diarsenic trisulfide
– ammonium acetate
– copper sulfate
– lithium oxide
– tin (II) carbonate
– tetraphosphorus decaoxide
11.
AlCL3
CaBr2
N20
Fe203
NaHCO3
Pb(NO3)4
HgSO4
CCL4
Cu3PO4
Ca(C2H3O2)2
IF7
Mg(OH)2
(NH4)2S
CO2

12. False
13. True
14. False
15. False
16. False
17. True
18. True
19. False
20. False
21. False
22. False
23. True
24. False
25. False
26. True
27. True
28. True
29. True
30. True
31. True

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