Question 1

Which of the following statements best describes the difference between ionic and covalent bonding?

Accepted Answer

Ionic bonding involves the complete transfer of valence electrons from a metal to a nonmetal, resulting in the formation of cations and anions, while covalent bonding involves the sharing of electrons between two nonmetals.

Question 2

How many valence electrons does an atom of sulfur (S) have?

Accepted Answer

Sulfur is in group 6A, so it has $6$ valence electrons.

Question 3

Which of the following is the correct Lewis dot symbol for carbon (C)?

Accepted Answer

C with 4 dots around it

Question 4

What is the correct formula for the ionic compound formed between magnesium and chlorine?

Accepted Answer

$\mathrm{MgCl_2}$

Question 5

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

Accepted Answer

Sodium sulfate

Question 6

A sample contains $4.33 	imes 10^{23}$ atoms of lithium. How many moles of lithium are present?

Accepted Answer

$0.720$ mol

Question 7

What is the percent composition of oxygen in lactic acid ($\mathrm{C_3H_6O_3}$)? (Atomic masses: C = 12.01, H = 1.008, O = 16.00)

Accepted Answer

$53.28\%$

Question 8

Which of the following is the correct empirical formula for a compound with a mass composition of $26.7\%$ C, $4.5\%$ H, and $68.8\%$ O?

Accepted Answer

$\mathrm{CH_2O}$

Question 9

What is the correct name for the compound $\mathrm{Fe(NO_3)_3}$?

Accepted Answer

Iron(III) nitrate

Question 10

Which of the following is a polyatomic ion?

Accepted Answer

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

Question 11

What is the molecular mass of $\mathrm{C_2H_5OH}$ (ethanol)? (Atomic masses: C = 12.01, H = 1.008, O = 16.00)

Accepted Answer

$46.07$ amu

Question 12

Which of the following compounds is a Type 3 (molecular) compound?

Accepted Answer

$\mathrm{CO_2}$

Question 13

What is the correct formula for ammonium sulfate?

Accepted Answer

$\mathrm{(NH_4)_2SO_4}$

Question 14

A compound has an empirical formula of $\mathrm{CH_2O}$ and a molar mass of $180$ g/mol. What is its molecular formula?

Accepted Answer

$\mathrm{C_6H_{12}O_6}$

Question 15

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

Accepted Answer

Dinitrogen tetroxide

Question 16

How many grams of nitrogen are present in $25.0$ g of $\mathrm{Fe(NO_3)_3}$? (Molar mass of $\mathrm{Fe(NO_3)_3}$ = $241.86$ g/mol)

Accepted Answer

$3.89$ g

Question 17

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

Accepted Answer

$\mathrm{Ca_3(PO_4)_2}$

Question 18

Which of the following is the correct name for $\mathrm{H_2SO_4}$ when dissolved in water?

Accepted Answer

Sulfuric acid

Question 19

What is the molar mass of ammonium sulfate ($\mathrm{(NH_4)_2SO_4}$)? (Atomic masses: N = 14.01, H = 1.008, S = 32.07, O = 16.00)

Accepted Answer

$132.14$ g/mol

Chapter 5: Ionic and Covalent Compounds – Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards