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Valence Electrons, Ions, and Compounds

Total questions: 36

Worksheet time: 19mins

Name
Class
Date
1.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
2.
How many valence electrons does nitrogen have?
a)
3
b)

2

c)
5
d)
1
3.
How many valence electrons does hydrogen have?
a)
3
b)
2
c)
5
d)
1
4.

__________ bonds are formed between two or more nonmetals.

a)

ionic

b)

covalent

c)

metallic

5.
A covalent bond involves a __________ of electrons.
a)
sharing
b)
borrowing
c)
exchanging
d)
switching
6.
Low melting point and low solubility in water are general properties of ______________________ compounds
a)
ionic
b)
covalent
c)
chemical
d)
glucose
7.

Which type of compounds tend to have higher melting points, can conduct electricity and form crystalline solids at room temperature?

a)

Ionic compounds

b)

Covalent compounds

8.

___________________ tend to have lower melting points, do not conduct electricity, and can be solids, liquids, or gases at room temperature

a)

Ionic compounds

b)

Covalent compounds

9.

Generally, atoms form bonds so that _______________.

a)

Each atom loses its electrons

b)

Each atom has a full outer shell of electrons

c)

Each atom has an unstable electron configuration

d)

Each atom gains electrons

10.

What type of bonding does this picture show?

a)

Ionic

b)

Covalent

11.

What type of bonding does this picture show?

a)

Ionic

b)

Covalent

12.
Nitrogen will form which of the following ions?
a)
N
b)
N-3
c)
N-5
d)
N+5
13.
Beryllium will ____ valence electrons when forming an ionic bond.
a)
lose 4
b)
gain 4
c)
lose 2
d)
gain 2
14.
Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?
a)
There are 2 bromide ions for every magnesium ion
b)
Bromide has a 2- charge
c)
Bromide has a 2+ charge
d)
There are 2 magnesium ions to every bromide ion
15.
Which is the correct name for CaBr2?
a)
Calcium Bromine
b)
Bromine Calcium
c)
Calcium Bromide
d)
Carbon and Bromine
16.

Oxygen has (a)   valence electrons.

17.

Which of the following pairs of elements will NOT form an ionic compound?

a)

sodium and fluorine

b)

phosphorous and aluminum

c)

potassium and magnesium

d)

strontium and oxygen

18.

Valence electrons are:

a)

the electrons in the outer most shell

b)

the electrons in the inner most shell

c)

the electrons closest to the nucleus

19.

Ions are atoms that

a)

have no charge

b)

have a charge

c)

are neutral

20.

Cations are formed when an atom ________ electrons and gets a ____________ charge

a)

gains; negative

b)

loses; positive

c)

keeps its; neutral

21.

Anions are formed when an atom ________ electrons and gets a ____________ charge

a)

gains; negative

b)

loses; positive

c)

keeps its; neutral

22.

_________ tend to form cations.

a)

metals

b)

nonmentals

c)

Noble gases

23.

_________ tend to form anions.

a)

metals

b)

nonmentals

c)

Noble gases

24.

Which of the following ions is a cation:

a)

Cl1-

b)

P3-

c)

Ca2+

25.

Which of the following ions is an anion:

a)

Cl1-

b)

Li1+

c)

Ca2+

26.

In an ionic bond, one atom _________ its electrons with another atom and is formed between a _________ and nonmetal.

a)

shares; nonmetal

b)

gives; metal

c)

keeps; gas

27.

In the compound NaCl:

Na is a ___________

Cl is a _________________

The bond is a _______________ bond

a)

metal; nonmetal; ionic

b)

nonmetal; nonmetal; covalent

c)

metal; metal; metallic

28.

In the compound H2O:

H is a ___________

O is a _________________

The bond is a _______________ bond

a)

metal; nonmetal; ionic

b)

nonmetal; nonmetal; covalent

c)

metal; metal; metallic

29.

Elements: Aluminum and Oxygen:

Aluminum's ionic charge is ________

Oxygen's ionic charge is ________

Chemical Formula: _____________

a)

2+; 3-; Al3O2

b)

3+ ; 2- ; Al2O3

30.

The compound name for Al2O3 is:

a)

Aluminum Oxide

b)

Aluminide Oxygen

c)

Aluminum Oxygen

31.

The compound name for S3P2 is:

a)

diphosphorus trisulfide

b)

trisulfur diphosphide

c)

sulfide phosphorus

32.

The compounds name for ClF is

a)

Chlorine monofluoride

b)

monochlorine monofluoride

c)

fluorine monochloride

33.

The compound name for Li3N

a)

Nitrogen lithiumide

b)

Trilithium Nitrogen

c)

Lithium Nitride

34.

The chemical formula for Dinitrogen trisulfide is:

a)

N2S3

b)

S3N2

c)

2N3S

35.

The chemical formula for carbon monoxide is

a)

CO2

b)

OC

c)

CO

36.

Elements: Potassium and Chlorine:

Potassium's ionic charge is ________

Chlorine's ionic charge is ________

Chemical Formula: _____________

a)

1+; 1-; KCl

b)

2+ ; 2- ; K2Cl2

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