Question 1

Which of the following best describes the Law of Multiple Proportions?

Accepted Answer

If two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other are in the ratio of small whole numbers.

Question 2

Which of the following is the correct name for the compound $$\mathrm{N_2O_4}$$?

Accepted Answer

Dinitrogen tetraoxide

Question 3

What is the correct formula for iron (III) sulfate?

Accepted Answer

$$\mathrm{Fe_2$(SO_4$)_3}$$

Question 4

Which of the following compounds is an example of a molecular (covalent) compound?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 5

Which of the following is the correct name for $$\mathrm{$$HClO_3$$}$$?

Accepted Answer

Chloric acid

Question 6

A compound contains 32 g of sulfur and 32 g of oxygen. If another compound contains 32 g of sulfur and 48 g of oxygen, what is the ratio of oxygen masses that combine with a fixed mass of sulfur?

Accepted Answer

$$\frac{48}{32} = 1.5:1$$

Question 7

Which of the following is the correct formula for magnesium dihydrogen phosphite?

Accepted Answer

$$\mathrm{Mg(H_2PO_3)_2}$$

Question 8

Which of the following best explains why ionic compounds are brittle?

Accepted Answer

When stress is applied, like charges are forced together, causing repulsion and cleavage.

Question 9

What is the correct name for $$\mathrm{Na_2SO_3}$$?

Accepted Answer

Sodium sulfite

Question 10

Which of the following is the correct formula for ammonium phosphate?

Accepted Answer

$$\mathrm{(NH_4$)_3PO_4}$$

Question 11

Which of the following is the correct name for $$\mathrm{$$FeSO_3$$}$$?

Accepted Answer

Iron (II) sulfite

Question 12

Which of the following is a property of metallic bonds?

Accepted Answer

Freely mobile electrons allow metals to conduct electricity and be malleable.

Question 13

What is the correct name for $$\mathrm{H_2SO_3}$$?

Accepted Answer

Sulfurous acid

Question 14

Which of the following is the empirical formula for benzene ($$\mathrm{C_6H_6}$$)?

Accepted Answer

$$\mathrm{CH}$$

Question 15

Which of the following is the correct name for $$\mathrm{$$PCl_5$$}$$?

Accepted Answer

Phosphorus pentachloride

Question 16

Which of the following is the correct formula for calcium hydrogen carbonate?

Accepted Answer

$$\mathrm{Ca($$HCO_3$$)_2}$$

Question 17

Which of the following is the correct name for $$\mathrm{NO_2$}$$?

Accepted Answer

Nitrogen dioxide

Question 18

Which of the following is the correct formula for sodium hydroxide?

Accepted Answer

$$\mathrm{NaOH}$$

Question 19

Which of the following is the correct name for $$\mathrm{$$HClO_4$$}$$?

Accepted Answer

Perchloric acid

Question 20

Which of the following best describes the difference between a molecular formula and an empirical formula?

Accepted Answer

A molecular formula shows the exact number of atoms, while an empirical formula shows the simplest whole-number ratio.

Compounds, Bonding, and Nomenclature in General Chemistry

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