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Chem Ch 7 bonds

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

When atoms bond, they gain __________.

a)

stability

b)

mass

c)

energy

d)

electrons

2.

An atom becomes more stable by bonding with another atom if the resulting electron configuration is more like that of what group of elements?

a)

alkali metals

b)

noble gases

c)

halogens

d)

metalloids

3.

Which of the following is a nonpolar covalent compound?

a)

NaCl

b)

Br2

c)

HCN

d)

Au

4.

Which of the following values for EN would represent a bond that is mostly ionic?

a)

0.8

b)

2.0

c)

2.4

d)

3.2

5.

In order to achieve an octet when combining with potassium, an atom of a Group 16 (6A) element would be expected to __________ electrons.

a)

lose

b)

gain

c)

share

d)

This cannot be determined from the given information.

6.

The ratio of cations to anions in an ionic compound is expressed in a chemical formula known as a(n) __________ unit.

a)

molecular

b)

formula

c)

atomic

d)

proportional

7.

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.

8.

Because most metals have __________, they are most likely to freely share electrons when bonding with each other.

a)

high electronegativities

b)

large atomic radii

c)

the ability to conduct electricity

d)

low electron affinities

9.

A mixture of atoms from multiple metals which has metallic properties is called a(n) __________.

a)

metalloid

b)

network

c)

alloy

d)

electron sea

10.

When atoms bond, they will seek a higher, more stable energy state.

a)

true

b)

false

11.

Diatomic molecules such as I2 exhibit ionic bonding.

a)

true

b)

false

12.

The compound Na2O exhibits ionic bonding.

a)

true

b)

false

13.

Some, but not all, covalent molecules exhibit polarity.

a)

true

b)

false

14.

Because of its high electronegativity, a molecule of fluorine is polar.

a)

true

b)

false

15.

Completely nonpolar bonds exist.

a)

true

b)

false

16.

Within a molecule, the atom that exerts a greater pull on the electrons has a partial positive charge.

a)

true

b)

false

17.

Covalently bonded compounds contain one or more pairs of shared electrons

a)

true

b)

false

18.

Hydrogen forms many covalent bonds by achieving a stable octet of electrons.

a)

true

b)

false

19.

When sodium and chlorine combine to form NaCl, a great amount of energy is released.

a)

true

b)

false

20.

Ionic compounds are not made of distinct molecules as are covalent compounds

a)

true

b)

false

21.

Metallic bonding is characterized by a loose transfer of electrons between two atoms.

a)

true

b)

false

22.

Some covalent substances occur as relatively hard, brittle crystals with high melting points, glassy lusters, and unusual electrical properties.

a)

true

b)

false

23.

Ionic compounds are more likely than covalent compounds to fracture along cleavage lines.

a)

true

b)

false

24.

Ionic compounds have considerably lower boiling points than polar covalent compounds.

a)

true

b)

false

25.

Solid ionic substances conduct electricity easily.

a)

true

b)

false

26.

The molecular shape of a chemical affects a medication’s ability to relieve suffering.

a)

true

b)

false

27.

predict the predominant type of bonding associated with each of the following CsI

a)

covalent

b)

ionic

c)

metallic

28.

Predict the predominant type of bonding associated with each of the following: electron-sea theory

a)

covalent

b)

ionic

c)

metallic

29.

Predict the predominant type of bonding associated with each of the following: CCl4

a)

covalent

b)

ionic

c)

metallic

30.

Predict the predominant type of bonding associated with each of the following: (PO4)3-

a)

covalent

b)

ionic

c)

metallic

31.

Predict the predominant type of bonding associated with each of the following: attraction between oppositely charged ions

a)

covalent

b)

ionic

c)

metallic

32.

Predict the predominant type of bonding associated with each of the following: I2

a)

covalent

b)

ionic

c)

metallic

33.

Predict the predominant type of bonding associated with each of the following: Fe3Al

a)

covalent

b)

ionic

c)

metallic

34.

Predict the predominant type of bonding associated with each of the following: Na2O

a)

covalent

b)

ionic

c)

metallic

35.

Predict the predominant type of bonding associated with each of the following: one or more pairs of shared electrons

a)

covalent

b)

ionic

c)

metallilc

36.

Predict the predominant type of bonding associated with each of the following: Zn

a)

covalent

b)

ionic

c)

metallic

37.

Return all unused chemicals to their original containers.

a)

true

b)

false

38.

All chemicals in the lab are to be considered dangerous.

a)

true

b)

false

39.

Never leave a lit burner unattended.

a)

true

b)

false

40.

Chipped or cracked glassware is okay to use.

a)

true

b)

false

41.

Does cesium (Cs) lose or gain electrons?

a)

lose

b)

gain

c)

neither

42.

Does argon (Ar) lose or gain electrons?

a)

lose

b)

gain

c)

neither

43.

Does boron (B) lose or gain electrons?

a)

lose

b)

gain

c)

neither

44.

Does fluorine (F) lose or gain electrons?

a)

lose

b)

gain

c)

neither

45.

Does beryllium (Be) lose or gain electrons?

a)

lose

b)

gain

c)

neither