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Ch. 7 Chemistry

Total questions: 27

Worksheet time: 14mins

Name
Class
Date
1.

Why do atoms bond?

a)

to lose stability and gain energy

b)

to gain stability and lose energy

c)

to transfer electrons

d)

to share electrons

2.

Chemical bonds between atoms involve the rearrangement of __________ to

maximize stability.

a)

protons

b)

neutrons

c)

electrons

d)

neutrinos

3.

What type of bond would you expect in a compound of oxygen and sodium?

a)

ionic

b)

metallic

c)

covalent

d)

polar covalent

4.

A bond that forms between two or more atoms that have high electron affinities is

most likely a(n) __________ bond.

a)

covalent

b)

ionic

c)

metallic

d)

delocalized

5.

Which of the following represents a nonpolar covalent molecule?

a)

NaCl

b)

Br2

c)

HCN

d)

Au

6.

The polarity of a bond depends on the difference in the atoms’ __________.

a)

electron affinities

b)

electronegativities

c)

atomic radii

d)

ionization energies

7.

To achieve an octet when combining with potassium, would an atom of a Group 16

element be expected to lose, gain, or share electrons?

a)

lose

b)

gain

c)

share

d)

This cannot be determined from the given information.

8.

Which of the following does not exist as a diatomic molecule?

a)

argon

b)

hydrogen

c)

chlorine

d)

oxygen

9.

What do we call the attraction between opposite electrical charges?

a)

electric force

b)

electron sharing

c)

electrostatic force

d)

electrical affinity

10.

What is the Lewis structure for H2S?

a)

b)

c)

d)

11.

Which of the following molecules contains one or more double covalent bonds?

a)

N2

b)

HCN

c)

CO2

d)

IBr

12.

Which of the following values for the electronegativity difference would best

represent a bond that is mostly ionic?

a)

0.8

b)

2.0

c)

2.4

d)

3.2

13.

An orderly arrangement of ions in a three-dimensional pattern within a compound

is called a(n) __________.

a)

formula unit

b)

ion array

c)

crystal lattice

d)

ionic network

14.

The electron-sea theory accounts for all the following characteristics of metals

except __________.

a)

luster

b)

conductivity

c)

brittleness

d)

ductility

15.

Most metals are likely to freely share electrons when bonding with each other

because they have __________.

a)

high electronegativities

b)

low electronegativities

c)

the ability to conduct electricity

d)

large atomic radii

16.

The mobile valence electrons in a metallic bond are said to be __________.

a)

delocalized

b)

externalized

c)

integrated

d)

hominized

17.

The luster or shine seen on most metals is thought to be caused by the movement

of __________.

a)

electrons

b)

ions

c)

protons

d)

neutrons

18.

CsI

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

19.

electron-sea theory

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

20.

CCl4

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

21.

attraction between oppositely charged ions

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

22.

Cu

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

23.

one or more pairs of shared electrons

a)

covalent (C)

b)

ionic (I)

c)

metallic (M)

24.

Compounds formed by the attraction between oppositely charged ions are the result of _______________ bonds

a)

ionic

b)

bonding pair

c)

formula unit

d)

alloy

25.

The electrons shared in a covalent bond are called a(n) _____________.

a)

ionic

b)

bonding pair

c)

formula unit

d)

alloy

26.

The ratio of cations to anions in an ionic compound is expressed as

a(n)

a)

ionic

b)

bonding pair

c)

formula unit

d)

alloy

27.

A mixture of atoms of a metal with another element where the mixture has metallic properties is

called a(n) _____________.

a)

ionic

b)

bonding pair

c)

formula unit

d)

alloy