Question 1

The mineral shown in the first image is a form of calcium sulfate known as gypsum. What is the correct chemical formula for gypsum?

Accepted Answer

$$\mathrm{$$CaSO_4$$ \cdot 2H_2O}$$

Question 2

Which of the following elements exists as a diatomic molecule at room temperature?

Accepted Answer

Nitrogen ($$\mathrm{N_2$})$$

Question 3

Which of the following is the correct name for the compound $$\mathrm{Na_2SO_4}$$?

Accepted Answer

Sodium sulfate

Question 4

A main-group metal tends to form a cation with the same number of electrons as the nearest noble gas. What ion does magnesium form?

Accepted Answer

$$\mathrm{Mg$$^{2+}$$}$$

Question 5

What is the correct formula for the ionic compound formed between aluminum and oxygen?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 6

Which of the following is the correct name for $$\mathrm{$$FeCl_3$$}$$?

Accepted Answer

Iron(III) chloride

Question 7

What is the correct formula for ammonium carbonate?

Accepted Answer

$$\mathrm{(NH_4$)_2CO_3}$$

Question 8

Which of the following acids is correctly named?

Accepted Answer

$$\mathrm{$$HNO_2$$}$$: nitrous acid

Question 9

What is the correct name for $$\mathrm{N_2O_5}$$?

Accepted Answer

Dinitrogen pentoxide

Question 10

Which of the following is the correct formula for calcium nitride?

Accepted Answer

$$\mathrm{Ca_3N_2}$$

Question 11

Which of the following is a correct statement about balancing chemical equations?

Accepted Answer

Changing the subscript changes the identity of the compound.

Question 12

Which of the following is the correct name for $$\mathrm{K_2Cr_2O_7}$$?

Accepted Answer

Potassium dichromate

Question 13

Which of the following is the correct formula for perchloric acid?

Accepted Answer

$$\mathrm{$$HClO_4$$}$$

Question 14

Which of the following is an isomer of 1-propanol?

Accepted Answer

2-propanol

Question 15

What is the correct name for $$\mathrm{$$CCl_4$$}$$?

Accepted Answer

Carbon tetrachloride

Question 16

Which of the following best describes the Law of Conservation of Mass?

Accepted Answer

The total mass of reactants equals the total mass of products in a chemical reaction.

Question 17

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

Accepted Answer

$$\mathrm{Na_2O_2}$$

Question 18

Which of the following is the correct name for $$\mathrm{NH_4NO_3}$$?

Accepted Answer

Ammonium nitrate

Question 19

Which of the following is the correct formula for xenon tetrafluoride?

Accepted Answer

$$\mathrm{$$XeF_4$$}$$

Question 20

Which of the following is the correct name for $$\mathrm{H_2CO_3}$$?

Accepted Answer

Carbonic acid

General Chemistry Study Guide: Molecular Structure, Ionic Compounds, and Chemical Nomenclature

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