Question 1

Which of the following statements best describes the difference between an anion and a cation?

Accepted Answer

An anion is a negatively charged ion, while a cation is a positively charged ion.

Question 2

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

Accepted Answer

$$\mathrm{$$CaBr_2$$}$$

Question 3

Which of the following ions is biologically important and commonly found in bones and teeth?

Accepted Answer

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

Question 4

What is the name of the compound with the formula $$\mathrm{Na_2SO_4}$$?

Accepted Answer

Sodium sulfate

Question 5

Which of the following best explains why ionic compounds have high melting points?

Accepted Answer

They have strong electrostatic attractions between oppositely charged ions.

Question 6

Which of the following is the correct Lewis dot structure for a chloride ion ($$\mathrm{Cl^-}$$)?

Accepted Answer

A Cl atom with 8 dots and a negative sign

Question 7

Which of the following compounds contains a polyatomic ion?

Accepted Answer

$$\mathrm{$$NaNO_3$$}$$

Question 8

What is the correct name for the compound $$\mathrm{CO_2$}$$?

Accepted Answer

Carbon dioxide

Question 9

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between two nonmetals

Question 10

Which of the following molecules is non-polar?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 11

Which of the following statements about resonance structures is correct?

Accepted Answer

Resonance structures show different possible arrangements of electrons in the same molecule.

Question 12

According to VSEPR theory, what is the molecular geometry of $$\mathrm{CH_4$}$$?

Accepted Answer

Tetrahedral

Question 13

Which of the following best explains why water ($$\mathrm{H_2O}) $$has a bent molecular shape?

Accepted Answer

The two lone pairs on oxygen repel the bonding pairs, creating a bent shape.

Question 14

Which of the following intermolecular forces is the strongest?

Accepted Answer

Hydrogen bonding

Question 15

Which of the following best describes the relationship between temperature and intermolecular forces in a liquid?

Accepted Answer

As temperature increases, intermolecular forces become weaker, leading to evaporation.

Question 16

How many total valence electrons are present in the carbonate ion ($$\mathrm{CO_3$^{2-}}$$)?

Accepted Answer

24

Question 17

Which of the following compounds is most likely to conduct electricity when dissolved in water?

Accepted Answer

$$\mathrm{NaCl}$$

Question 18

Which of the following is the correct name for $$\mathrm{N_2O_5}$$?

Accepted Answer

Dinitrogen pentoxide

Question 19

Which of the following best describes dispersion forces?

Accepted Answer

They are the result of temporary shifts in electron density in non-polar molecules.

Question 20

A patient is given an intravenous solution containing $$\mathrm{K^+}$$ and $$\mathrm{Cl^-}. $$What type of compound is formed when these ions combine, and what is its formula?

Accepted Answer

An ionic compound, $$\mathrm{KCl}$$

Chapter 6 Study Guide: Ionic and Molecular Compounds

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