Free Printable Chemistry 2020 Unit 7

Free Printable Worksheets

Worksheets

Chemistry 2020 Unit 7

Total questions: 75

Worksheet time: 2hrs 35mins

Name

Class

Date

1.

Nonmetals tend to

a)

gain electrons

b)

lose electrons

2.

Metals tend to

a)

gain electrons

b)

lose electrons

3.

How do the following two elements bond together?
Na¹⁺ F^1-

a)

NaF

b)

NaF₃

c)

Na₃F

d)

Na₁F₂

4.

How do the following two elements bond together?
K¹⁺ S^2-

a)

KS

b)

K₈S

c)

K₆S₃

d)

K₂S

5.

How do the following two elements bond together?
Al³⁺ O^2-

a)

AlO

b)

Al₂O₃

c)

Al₃O₆

d)

Al₃O₂

6.

The proper formula for magnesium hydroxide:

a)

MgOH

b)

Mg₂OH

c)

Mg(OH)₂

d)

Mg₂OH₂

7.

What is the charge on the hydroxide ion?

a)

0

b)

-1

c)

-2

d)

-3

8.

Name the following ionic compound: LiNO₃

a)

lithium nitrate

b)

lithium III nitrate

c)

lithium nitride

d)

lithium oxide

9.

Name the following ionic compound: MgSO₄

a)

magnesium sulfoxide

b)

magnesium sulfide

c)

magnesium sulfate

d)

magnesium oxide

10.

Name the following ionic compound: BeCl₂

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

11.

What would be the proper chemical formula for combining Al³⁺ and Cl^- :

a)

AlCl₃

b)

Al₃Cl

c)

AlCl

d)

Al₃Cl₃

12.

The chemical formula of lead (IV) nitrate is

a)

PbN₄

b)

PbNO₃₄

c)

Pb(NO₃)₄

d)

Pb₃NO₄

13.

The chemical formula of iron (III)bromide is

a)

FeBr

b)

Fe(III)Br

c)

FeBr₃

d)

Fe₂Br₃

14.

When naming ionic compounds you always write the name of the positive element _______ .

a)

first

b)

second

c)

with "ide"

d)

with a prefix

15.

In most cases, when naming you change the ending of the second element to ________.

a)

-ate.

b)

-ite.

c)

-ide.

d)

-ine.

16.

What is the formula for calcium phosphide?

a)

CaP

b)

Ca₂P₃

c)

Ca₃P₂

d)

Ca₂P

17.

What is the formula for copper(I) sulfate?

a)

CuSO₃

b)

CuSO₄

c)

Cu₂SO₃

d)

Cu₂SO₄

18.

The chemical formula for an ionic compound of potassium and oxygen is

a)

KO.

b)

K₂O.

c)

K₂O₂.

d)

KO₂.

19.

Is the following compound ionic or covalent?

LiBr

a)

Ionic

b)

Covalent

20.

Is the following compound ionic or covalent?

PBr₅

a)

Ionic

b)

Covalent

21.

Is the following compound ionic or covalent?

Cl₂

a)

Ionic

b)

Covalent

22.

Is the following compound ionic or covalent?

Cu(NO₃)₂

a)

Ionic

b)

Covalent

23.

Is the following compound ionic or covalent?

A material that forms a crystal lattice

a)

Ionic

b)

Covalent

24.

Is the following compound ionic or covalent?

BaI₂

a)

Ionic

b)

Covalent

25.

Is the following compound ionic or covalent?

Ag₂O

a)

Ionic

b)

Covalent

26.

Is the following compound ionic or covalent?

A material that LOSES and GAINS electrons

a)

Ionic

b)

Covalent

27.

Is the following compound ionic or covalent?

A material that contains two nonmetals

a)

Ionic

b)

Covalent

28.

Is the following compound ionic or covalent?

A material that contains a metal and a nonmetal

a)

Ionic

b)

Covalent

29.

Have a high m.p. (1000°C-3000°C)

a)

ionic compounds

b)

covalent compounds

30.

Have a low m.p. (< 200°C)

a)

ionic compounds

b)

covalent compounds

31.

When dissolved in water, the solution is a good conductor of electricity.

a)

ionic compounds

b)

covalent compounds

32.

When dissolved in water, the solution does NOT conduct electricity.

a)

ionic compounds

b)

covalent compounds

33.

usually hard but brittle

a)

ionic compounds

b)

covalent compounds

34.

forms ions in solution

a)

ionic compounds

b)

covalent compounds

35.

electrolytes

a)

ionic compounds

b)

covalent compounds

36.

nonelectrolytes

a)

ionic compounds

b)

covalent compounds

37.

Classify the following molecule.

a)

polar

b)

nonpolar

38.

Classify the following molecule.

a)

polar

b)

nonpolar

39.

Is the following molecule polar or nonpolar?

a)

polar

b)

nonpolar

40.

F₂

a)

Polar

b)

Nonpolar

41.

H₂O

a)

Polar

b)

Nonpolar

42.

How do covalent bonds form?

a)

Donating & receiving valence e- between atoms.

b)

Opposite slight charges attract each other between compounds.

c)

Scientists are still not sure how they form.

d)

Sharing valence e- between atoms.

43.

Electronegativity is a measurement of the ability of a nucleus to:

a)

attract bonding electrons

b)

attract other nuclei

c)

attract electrons in the non-valence energy levels

44.

Which formula represents a nonpolar molecule?

a)

HBr

b)

H₂S

c)

CBr₄

d)

PCl₃

45.

Which substance contains particles held together by metallic bonds?

a)

Ne (g)

b)

Ni (s)

c)

Cl₂(g)

d)

N₂ (s)

46.

Which element consists of positive ions immersed in a “sea” of mobile electrons?

a)

Magnessium

b)

Bromine

c)

Iodine

d)

Argon

47.

Element X is in Group 2 and element Y is in Group 17. What happens when a compound is formed between these two atoms?

a)

X gains electrons from Y to form a covalent bond.

b)

X gains electrons from Y to form an ionic bond.

c)

X loses electrons to Y to form a covalent bond.

d)

X loses electrons to Y to form an ionic bond.

48.

The ability to conduct electricity in the solid state is a characteristic of metallic bonding. This characteristic is best explained by the presence of

a)

mobile protons

b)

high ionization energy

c)

Mobile electrons

d)

high electronegativity

49.

What is the maximum number of covalent bonds that a carbon atom can form?

a)

3

b)

2

c)

4

d)

1

50.

The = in the bond O=O represents how many shared electrons?

a)

6

b)

2

c)

4

d)

3

51.

How many bonds are between a single hydrogen and oxygen in H₂O?

a)

1

b)

3

c)

2

d)

4

52.

What is the basis of a metallic bond?

a)

the attraction of neutral metal atoms.

b)

the attraction between protons and neutrons.

c)

the attraction between positive metal ions and interlocking electrons.

d)

the attraction between positive metal ions and free moving electrons.

53.

Electrons that are free to move in metals are called (a) electrons

54.

Why do metals conduct electricity?

a)

They are shiny

b)

The electrons are delocalized and able to move

c)

The electrons are held tightly within the lattice

d)

The electrons are shared between two metal ions

55.

Which of these are considered properties of metals? (choose ALL that apply)

a)

brittleness

b)

low melting point

c)

luster (shininess)

d)

malleability

e)

ductility

56.

According to the octet rule most elements need _______ valence electrons.

a)

2

b)

8

c)

6

d)

18

57.

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

a)

A

b)

B

c)

C

d)

D

58.

Three pairs of electrons are shared in a

a)

Single bond

b)

Double bond

c)

Triple bond

59.

What is the correct structure for BF₃?

a)

Option A.

b)

Option B.

c)

Option C.

d)

Option D.

60.

How many electrons does each line indicate are shared?

a)

1

b)

2

c)

3

d)

4

61.

How many electrons are being shared in the triple bond of N₂?

a)

2

b)

3

c)

4

d)

6

62.

According to the octet rule most elements need _______ valence electrons.

a)

2

b)

8

c)

6

d)

18

63.

Four electrons are shared between two atoms

a)

Single bond

b)

Double bond

c)

Triple bond

64.

How many electrons does each line indicate are shared?

a)

1

b)

2

c)

3

d)

4

65.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

66.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

67.

what type of bond is the strongest

a)

single

b)

Double

c)

coordination

d)

triple

68.

How many are shared in a double bond?

a)

2

b)

4 pairs

c)

6

d)

4

69.

Covalent compounds

a)

Share electrons

b)

transfer electrons

c)

contain a sea of electrons

d)

conduct electricity

70.

What is the correct formula for this molecule?

a)

NH

b)

N₃H

c)

NH₃

d)

NH₄

71.

A metallic bond is a bond between ________.

a)

nonmetals

b)

metals

c)

transition metals

d)

metalloids

72.

Which of the following is NOT a property of metals?

a)

Hard

b)

Can conduct electricity in solid form

c)

Very brittle (breaks easily)

d)

Malleable (can bend without breaking)

73.

Does HCl have hydrogen bonding?

a)

yes

b)

no

74.

All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces. Which of these has ONLY London forces?

a)

I₂

b)

NH₃

c)

OCl₂

d)

SH₂

75.

Intermolecular forces for: NH₃

a)

Dispersion Force

b)

Dipole dipole

c)

Hydrogen bonding

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