Question 1

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

Accepted Answer

Dinitrogen tetraoxide

Question 2

What is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 3

Which of the following elements is a diatomic molecule in its natural state?

Accepted Answer

Chlorine

Question 4

What is the charge on the iron ion in $$\mathrm{Fe_2O_3}$$?

Accepted Answer

$$3+$$

Question 5

Which of the following is the correct name for $$\mathrm{$$CuSO_4$$}$$?

Accepted Answer

Copper(II) sulfate

Question 6

Calculate the molar mass of $$\mathrm{Ca_3$(PO_4$)_2}$$ using the following atomic masses: Ca = 40.08 g/mol, P = 30.97 g/mol, O = 16.00 g/mol.

Accepted Answer

$$310.18\ \mathrm{g/mol}$$

Question 7

Which of the following compounds is ionic?

Accepted Answer

$$\mathrm{NaCl}$$

Question 8

What is the correct name for $$\mathrm{$$AlBr_3$$}$$?

Accepted Answer

Aluminum bromide

Question 9

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{CO_3$^{2-}}$$

Question 10

How many protons, neutrons, and electrons are in a $$\mathrm{^{7}_{3}Li^+}$$ ion?

Accepted Answer

3 protons, 4 neutrons, 2 electrons

Question 11

Which of the following is the correct formula for dinitrogen pentoxide?

Accepted Answer

$$\mathrm{N_2O_5}$$

Question 12

What is the correct name for $$\mathrm{$$SnI_4$$}$$?

Accepted Answer

Tin(IV) iodide

Question 13

Which of the following is the correct formula for lithium chromate?

Accepted Answer

$$\mathrm{Li_2CrO_4}$$

Question 14

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

Accepted Answer

$$\mathrm{CO_2$}$$

Question 15

What is the correct name for $$\mathrm{Cr_2$(CO_3$)_3}$$?

Accepted Answer

Chromium(III) carbonate

Question 16

Which of the following ions is formed when a nonmetal atom gains electrons?

Accepted Answer

Anion

Question 17

What is the molar mass of $$\mathrm{CH_3COOH} ($$acetic acid)? (C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol)

Accepted Answer

$$60.05\ \mathrm{g/mol}$$

Question 18

Which of the following is the correct name for $$\mathrm{Cl_2O}$$?

Accepted Answer

Dichlorine monoxide

Question 19

Which of the following is the correct formula for sodium bicarbonate (baking soda)?

Accepted Answer

$$\mathrm{$$NaHCO_3$$}$$

Question 20

Which of the following best describes the difference between molar mass and mass number?

Accepted Answer

Molar mass is the mass of one mole of a substance in g/mol, while mass number is the sum of protons and neutrons in an atom.

Names, Formulas, and Properties of Chemical Compounds: Study Guide

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