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Covalent Compounds

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.
Elements combine to form __________.
a)
compounds
b)
atoms
c)
positive ions
d)
negative ions
2.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
3.
A ________ is a model of an atom in which each dot represents a valence electron.
a)
Valence electron
b)
Electron dot diagram/Lewis dot structure
c)
Lewis bond structure
4.
How many valence electrons does nitrogen have?
a)
3
b)

2

c)
5
d)
1
5.
How many valence electrons does hydrogen have?
a)
3
b)
2
c)
5
d)
1
6.
Compounds made from only nonmetals are _________________ compounds.
a)
ionic
b)
covalent
c)
metallic
d)
chemical
7.
A covalent bond involves a __________ of electrons.
a)
sharing
b)
borrowing
c)
exchanging
d)
switching
8.
A __________ is a number written to the right of a chemical symbol and slightly below it.
a)
subscript
b)
coefficient
c)
chemical formula
d)
compound
9.

All nonmetals, except Hydrogen and Boron, need ______ valence electrons to become stable.

a)

4

b)

6

c)

8

d)

10

10.

Name the following compound: N2O2

a)

Nitrogen oxide

b)

Nitrogen dioxide

c)

Dinitrogen dioxide

d)

Dinitrogen oxide

11.

Name the following compound: SO3

a)

Sulfur trioxide

b)

Sulfur oxide

c)

Trisulfur oxide

d)

Sulfur dioxide

12.

Name the following compound: CO

a)

Monocarbon monoxide

b)

Carbon monoxide

c)

Carbon oxide

d)

Monocarbon oxide

13.

Name the following compound: H2S

a)

Hydrogen disulfide

b)

Hydrogen sulfide

c)

Dihydrogen sulfide

d)

Dihydrogen monosulfide

14.

Name the following compound: N2O5

a)

Dinitrogen oxide

b)

Dinitrogen pentoxide

c)

Nitrogen pentoxide

d)

Pentanitrogen dioxide

15.

Name the following compound: CF4

a)

Carbon fluoride

b)

Carbon tetrafluoride

c)

Carbon trifluoride

d)

Carbon pentafluoride

16.

Name the following compound: XeF6

a)

Monoxenon hexafluoride

b)

Xenon fluoride

c)

Xenon hexafluoride

d)

Xenon tretrafluoride

17.

What is the chemical formula for Nitrogen monoxide?

a)

CO

b)

NO

c)

N2O

d)

NO2

18.

What is the chemical formula for Dichlorine monoxide?

a)

ClO

b)

ClO2

c)

Cl2O2

d)

Cl2O

19.

What is the chemical formula for Dioxygen difluoride?

a)

O2F2

b)

OF

c)

O2F

d)

OF2

20.

What is the chemical formula for Carbon tetrachloride?

a)

CF4

b)

CCl4

c)

C4Cl4

d)

C4Cl

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