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Unit Test Review

Total questions: 35

Worksheet time: 20mins

Name
Class
Date
1.
There are 8 valence electrons in group 16
a)
True 
b)
False
2.
Which element doesn't need 8 valence electrons to be stable?
a)
Hg
b)
H
c)
K
d)
O
3.
Which is a chemical-bond that involves the sharing of electron pairs between atoms?
a)
Ionic Bonding
b)
Covalent Bonding
c)
Metallic Bonding
4.
The complete transfer of valence electron(s) between atoms describes which type of bonding?
a)
Covalent Bonding
b)
Ionic Bonding
c)
Metallic Bonding
5.
A lasting attraction between atoms that enables the formation of chemical compounds. 
a)
Chemical Bonding
b)
Covalent Bonding
c)
Ionic Bonding
d)
Metallic Bonding
6.
How many electrons can be in the first electron shell?
a)
4
b)
8
c)
2
d)
1
7.
How many electrons can there be in the 2nd and 3rd shells?
a)
2
b)
10
c)
8
d)
5
8.
What type of bond is NaCl?
a)
Metallic Bond
b)
Ionic Bond
c)
James Bond
d)
Covalent Bond
9.
What are the particles that make up an atom?
a)
Positron, Muon, Gluon
b)
Photon, Neuron, Z Boson
c)
Neutrino, Proton, Electron
d)
Proton, Neutron, Electron
10.

Balance the chemical equation:

___H2O2 --> ___H2O + ___ O2

a)

2 H2O2 --> 2 H2O + 1 O2

b)

4 H2O2 --> 4 H2O + 2 O2

c)

2 H2O2 --> 2 H2O + 2 O2

d)

2 H2O2 --> 3 H2O + 1 O2

11.
What type of bond is used within metals?
a)
Metallic bond 
b)
Covalent bond
c)
Ionic bond
d)
Thomas Bond
12.
Which one of these has eight valence electrons?
a)
Helium
b)
Xenon
c)
Carbon
d)
Aluminum
13.
How many valence electrons does Carbon have?
a)
Six.
b)
4
c)
6
d)
1
14.
What is a reaction that releases energy?
a)
Endothermic
b)
Cold-blooded
c)
Exothermic
d)
Warm-blooded
15.
What is a reaction that absorbs energy? 
a)
Exothermic.
b)
Warm-blooded.
c)
Cold-blooded.
d)
Endothermic.
16.
What does the Law of Conservation of Mass mean in chemical reactions?
a)
Two sides of equation must be balanced. 
b)
Matter can be created. 
c)
Matter is destroyed in chemical reactions.
d)
Two sides of the equation are unbalanced. 
17.

Which is a trait of metals?

a)

Ductile

b)

Poor conductors

c)

Non-Bendable

d)

Gas at room temp.

18.

Which state of matter is the most compact?

a)

Solid

b)

Liquid

c)

Gas

19.

Metal is Malleable

a)

True

b)

False

20.
What is the charge of a proton?
a)
Positive 
b)
Neutral 
c)
Negative 
d)
No charge 
21.
what is the charge of an electron?
a)
negative 
b)
positive 
c)
neutrel
22.
what is the charge of a neutron 
a)
positive 
b)
negative 
c)
nuetral
23.

What means the amount of energy needed to melt ice into water?

a)

Heat of Fusion

b)

Heat of Vaporization

c)

Ionization Energy

d)

Liquification

24.

What is the idea that matter is made of constantly moving particles?

a)

First Law of Thermodynamics

b)

Heat of Fusion

c)

Kinetic Theory of Matter

d)

Law of Conservation of Matter

25.

Identify this particle.

a)

Chlorine Atom

b)

Cobalt Atom

c)

Chlorine Isotope

d)

Chlorine Ion

26.

This describes something made entirely out of the same type of atoms.

a)

Element

b)

Compound

c)

Homogeneous Mixtrue

d)

Heterogeneous Mixture

27.

This describes something made from several different atoms, but bonded together into identical particles.

a)

Element

b)

Compound

c)

Homogeneous Mixtrue

d)

Heterogeneous Mixture

28.

This describes something made from several different substances, but are mixed so well as to not see different sections.

a)

Element

b)

Compound

c)

Homogeneous Mixtrue

d)

Heterogeneous Mixture

29.

This describes something made from several different substances, and you can clearly see different parts.

a)

Element

b)

Compound

c)

Homogeneous Mixtrue

d)

Heterogeneous Mixture

30.

What is the formula for the following compound?


carbon tetrachloride

a)

CCl4

b)

CTc

c)

C2Cl3

d)

CCl10

31.

What is the formula for the following compound?


iron (III) fluoride

a)

Fe3F

b)

FeF2

c)

Fe2F6

d)

FeF3

32.

What is the formula for the following compound?


potassium oxide

a)

PO

b)

KO2

c)

K2O

d)

KO

33.

What is the name for the following compound?


NaCl

a)

sodium chloride

b)

nitrogen chloride

c)

sodium chlorine

d)

sodium (I) chloride

34.

What is the name for the following compound?


O2Br2

a)

oxygen (I) bromide

b)

oxygen bromide

c)

dioxygen bromide

d)

oxygen dibromide

e)

dioxygen dibromide

35.

What is the name for the following compound?


WO3

a)

tungsten (IV) oxide

b)

tungsten (VI) oxide

c)

tungsten trioxide

d)

tungsten oxygen

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