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Unit 3 Exam Review

Total questions: 48

Worksheet time: 31mins

Name
Class
Date
1.

Which best describes a solid?

a)

a form of matter w/ a definite shape and definite volume

b)

a form of matter w/ a indefinite shape and definite volume

c)

a form of matter w/ a indefinite shape and indefinite volume

2.

Which best describes a liquid?

a)

a form of matter w/ a definite shape and definite volume

b)

a form of matter w/ a indefinite shape and definite volume

c)

a form of matter w/ a indefinite shape and indefinite volume

3.

Which best describes a gas?

a)

a form of matter w/ a definite shape and definite volume

b)

a form of matter w/ a indefinite shape and definite volume

c)

a form of matter w/ a indefinite shape and indefinite volume

4.

What is it called when a solid turns into a liquid

a)

Melting

b)

Freezing

c)

Evaporation

d)

Condensation

e)

Sublimation

5.

What is it called when a liquid turns into a solid

a)

Melting

b)

Freezing

c)

Evaporation

d)

Condensation

e)

Sublimation

6.

What is it called when a liquid turns into a gas

a)

Evaporation

b)

Condensation

c)

Sublimation

d)

Deposition

7.

What is it called when a gas turns into a liquid?

a)

Evaporation

b)

Condensation

c)

Sublimation

d)

Deposition

8.

What is it called when a gas turns into a solid?

a)

Evaporation

b)

Condensation

c)

Sublimation

d)

Deposition

9.

What is it called when a solid turns into a gas?

a)

Evaporation

b)

Condensation

c)

Sublimation

d)

Deposition

10.
What term goes on number 11 in the diagram below?
a)
Melting
b)
Condensation
c)
Evaporation
d)
Sublimation
11.
Which TWO can you classify as a pure substance?
a)

Element

b)

Compound

c)

Mixture

12.
Which description best describes a heterogeneous mixture?
a)
Molecules are mixed up in an even distribution
b)
Molecules are not mixed up in an even distribution
c)
A combination of two or more pure substances that are not chemically combined.
d)
Pure substances that cannot be separated into simpler substances by physical or chemical means.
13.

Which description best describes a homogeneous mixture?

a)

Molecules are mixed up in an even distribution

b)

Molecules are not mixed up in an even distribution

c)

A combination of two or more pure substances that are not chemically combined.

d)

Pure substances that cannot be separated into simpler substances by physical or chemical means.

14.

Which two of the following can filter light?

a)

Solution

b)

Colloid

c)

Suspension

15.
Which image best represents the particles in a liquid?
a)
.
b)
..
c)
. .
16.

Which image best represents the particles in a gas?

a)

.

b)

..

c)

. .

17.

Which image best represents the particles in a solid?

a)

.

b)

..

c)

. .

18.
P + O₂ → P₄O₁₀
a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

19.
HgO → Hg + O₂
a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

20.
Cl₂ + NaBr → NaCl + Br₂
a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

21.
BaCl₂ + Na₂SO₄ → NaCl + BaSO₄
a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustions

22.
C₆H₁₂ + 9 O₂ → 6 CO₂ + 6 H₂O
a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

23.

Which type of chemical reaction does this show?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

24.

Which type of chemical reaction does this show?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

25.

Which type of chemical reaction does this show?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

26.

Which type of chemical reaction does this show?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

27.

Which type of chemical reaction does this show?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

28.

How would you classify Iron?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

29.

How would you classify salt?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

30.

How would you classify lemonade (with no pulp)?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

31.

How would you classify a bag of different types of rocks?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

32.

I can tell you the best way to separate a mixture!!

a)

Yes I can!!

b)

No I can't!!

33.
The following abbreviation represents what element: O
a)
Oxygen
b)
Carbon
c)
Oil
34.
The following element is represented by what abbreviation: Chlorine
a)
Cl
b)
C
c)
Ch
35.
Which number in the following compound is a coefficient?
a)
6
b)
12
c)
18
d)
2
36.
What is the subscript for Hydrogen?
a)
6
b)
12
c)
18
d)
2
37.
How many sodium atoms are in the following compound?
a)
1
b)
2
c)
3
d)
0
38.
How many oxygen atoms are in the following compound?
a)
0
b)
1
c)
2
d)
4
39.
How many oxygen atoms are in the following compound?
a)
1
b)
3
c)
7
d)
9
40.

How many total atoms are in the following compound?

a)

2

b)

4

c)

6

d)

0

41.
Which side of a chemical equation os the product side?
a)

Left (before the reaction arrow)

b)

Right (after the reaction arrow)

42.
Which side of a chemical equation is the reactant side?
a)

Left (before the reaction arrow)

b)

Right (after the reaction arrow)

43.

Why must the number of atoms on either side of the arrow be equal to each other in a chemical equation?

a)

to abide by the law of conservation of energy

b)

to abide by law of conservation of mass

c)

to abide by the law of fundamental equations

d)

because everything must be even for the universe to stay in balance

44.
How would you correctly balance this equation?
a)
1, 2, 3, 4
b)
1, 2, 1, 2
c)
2, 4, 1, 3
d)
It is already balanced
45.
How would you correctly balance this equation?
a)
2,1,2,1
b)
1,1,1,1
c)
2,2,2,2
d)
It is already balanced
46.

___PCl5 + ___ H2O → ___ HCl + ___H3PO4

a)

1, 4, 5, 1

b)

1, 1, 6, 1

c)

1, 3, 8, 1

d)

1, 2, 2, 1

47.

__ Al + __FeO → __Al2O2 + __ Fe

a)

1, 1, 1, 2

b)

2,1,1,2

c)

2, 2, 1, 2

d)

2,4,1,2

48.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2

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