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Chemistry Assessment Review

Total questions: 55

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
2.
How much does a 5 gram Hershey's kiss weigh after it is melted in the microwave?
a)
5 grams
b)
3 grams
c)
7 grams
3.
If reaction starts with 20g of reactants it should produce... 
a)
a total of 40g of product
b)
a total of 10g of product
c)
a total of 80 g of product
d)
a total of 20g of product
4.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
5.

In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?

a)

4 grams

b)

6 grams

c)

8 grams

d)

10 grams

6.
The principle of conservation of mass is true for
a)
Physical Changes
b)
Chemical Changes
c)
Neither
d)
Both
7.

If 50g of reactant forms 40g of product, what happened to the other 10g?

a)

It was destroyed

b)

Mass was not conserved

c)

It escaped as gas

8.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
9.
Which has particles that travel faster?
a)
gas
b)
solid
c)
liquid
d)
amorphous solid
10.

What is matter?

a)

anything that has mass and takes up space

b)

anything that can be felt

c)

anything that can behave in many different ways

d)

anything that exist on Earth

11.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
12.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
13.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
14.
The law of conservation of matter states that
a)
chemical reactions change matter.
b)
in chemical reactions, the identity of reactants and products is conserved.
c)
atoms are neither created nor destroyed in chemical reactions.
d)
a chemical equation must be balanced.
15.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
16.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced
17.

A chemical change is different than a physical change because in a chemical change

a)

chemicals are used

b)

molecules do not physically touch

c)

a new substance is formed and in a physical no new substance is formed

d)

the change can be seen but in a physical change it cannot

18.

Which of the following is a common sign that a chemical change has occurred?

a)

A chemical has turned a different color, bubbled, and/or changed temperature.

b)

A chemical has changed to a different state of matter, such as a liquid to a solid.

c)

A chemical has changed size.

d)

A chemical has become a different shape.

19.

Who lives in a pineapple under the sea?

a)

SpongeBob SquarePants

b)

SpongeBob SquarePants

c)

SpongeBob SquarePants

d)

SPONGEBOB SQUAREPANTS

20.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
21.

Which is made up of one type of atom only?

a)

Element

b)

Compund

c)

Mixture

22.

Ba

a)

Compound

b)

Element

c)

Mixture

23.

KCl2

a)

Compound

b)

Element

c)

Mixture

24.

Lucky Charms Cereal

a)

Compound

b)

Element

c)

Mixture

25.

Chocolate Chip Muffin

a)

Compound

b)

Element

c)

Mixture

26.

Koolaid

a)

Compound

b)

Element

c)

Mixture

27.

Mg

a)

Compound

b)

Element

c)

Mixture

28.

Salt (NaCl)

a)

Compound

b)

Element

c)

Mixture

29.
What do we put at the top of a graph?
a)
X axis
b)
data table
c)
title 
d)
nothing
30.
What do we use to pick the numbers for the scale? 
a)
whatever we want
b)
you must always count by tens
c)
use your data to pick the scale
d)
you don't need a scale
31.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
32.
In an exothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released
33.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
34.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
35.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
d)
Left side is balanced
36.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
37.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
38.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
39.
N2 + H2 = NH4
a)
Balanced
b)
Unbalanced
40.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

41.

Graphs should include? (select all that apply)

a)

Title

b)

Axis Labels

c)

Data

d)

Units

e)

Only use the space you need

42.
What takes place when a liquid changes to a solid?
a)
condensation
b)
melting
c)
evaporation
d)
freezing
43.
What takes place when a solid changes to a liquid?
a)
condensation
b)
freezing
c)
melting
d)
evaporation
44.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
45.
Change from Gas to Solid is called........
a)
Sublimation
b)
Deposition
c)
Fusion
d)
condensation
46.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
47.
change from liquid to gas is called....
a)
expansion
b)
evaporation
c)
condensation
d)
sublimation
48.
What is sublimation?
a)
phase change between solid and liquid
b)
pahse change from gas to solid
c)
phase change from solid to gas
d)
phase change from solid to solid
49.
What is deposition?
a)
Phase change from gas to solid
b)
phase change from liquid to solid
c)
Phase change from solid to gas
d)
Phase change from liquid to gas
50.
change from liquid to gas is called....
a)
expansion
b)
evaporation
c)
condensation
d)
sublimation
51.
Change from Liquid to Solid is call......
a)
fusion
b)
Freezing
c)
sublimation
d)
evaporation
52.

How many hydrogen atoms are in 3H2O?

a)

2

b)

6

c)

3

d)

1

53.

How many Oxygen atoms are in 2H2SO4?

a)

4

b)

6

c)

8

d)

1

54.

Which is an exothermic reaction?

a)

Beaker A

b)

Beaker B

c)

Both

d)

Neither

55.

Which is an endothermic reaction?

a)

Beaker A

b)

Beaker B

c)

Both

d)

Neither

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