Question 1

Which of the following best describes a compound?

Accepted Answer

A substance made of two or more elements chemically combined in a fixed proportion by mass.

Question 2

What is the correct formula for magnesium nitrate?

Accepted Answer

$$\mathrm{Mg(NO_3$)_2}$$

Question 3

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 4

How many oxygen ions are required to neutralize a titanium ion with a $$+4$$ charge, given that each oxygen ion has a $$-2$$ charge?

Accepted Answer

2 oxygen ions

Question 5

Which of the following is the correct formula for iron(III) chloride?

Accepted Answer

$$\mathrm{$$FeCl_3$$}$$

Question 6

What is the name of the compound $$\mathrm{$$CaCl_2$$}$$?

Accepted Answer

Calcium chloride

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

$$\mathrm{CO_2$}$$

Question 9

What is the correct name for $$\mathrm{N_2O_4}$$?

Accepted Answer

Dinitrogen tetraoxide

Question 10

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

Accepted Answer

$$\mathrm{H_2SO_3}$$

Question 11

Which of the following ions has a $$-2$$ charge?

Accepted Answer

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

Question 12

What is the correct formula for copper(II) bromide?

Accepted Answer

$$\mathrm{$$CuBr_2$$}$$

Question 13

Which of the following is a diatomic molecule that exists naturally as a gas?

Accepted Answer

$$\mathrm{O_2$}$$

Question 14

What is the correct name for $$\mathrm{Fe_2$(SO_4$)_3}$$?

Accepted Answer

Iron(III) sulfate

Question 15

Which of the following is the correct formula for barium bromide?

Accepted Answer

$$\mathrm{$$BaBr_2$$}$$

Question 16

Which of the following is the correct formula for iron(II) phosphate?

Accepted Answer

$$\mathrm{Fe_3$(PO_4$)_2}$$

Question 17

Which of the following is the correct formula for dihydrogen monoxide?

Accepted Answer

$$\mathrm{H_2O}$$

Question 18

Which of the following is the correct formula for phosphorous trichloride?

Accepted Answer

$$\mathrm{$$PCl_3$$}$$

Question 19

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

Accepted Answer

$$\mathrm{Mg_3$(PO_4$)_2}$$

Question 20

Which of the following is the correct formula for nitrate ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Chapter 5: Elements and Compounds – Introduction to Chemical Compounds, Formulas, and Nomenclature

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