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

Study Guide - Practice Questions