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WorksheetsChemistry Review Quiz
Total questions: 21
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
Chocolate milk is a substance.
a)
True
b)
False
2.
A KIPPster has two samples of unknowns and wants to find out if they are the same substance or not. Which of the following are both observations that would help the KIPPster determine if they are the same substance?
a)
Mass & Shape
b)
Color & Hardness
c)
a. Shape & Color
d)
a. Size & Hardness
3.
When a liquid becomes a gas, that process is called ___________________. When a gas becomes a liquid it is called ____________________.
a)
Melting; freezing
b)
Evaporation; condensation
c)
Evaporation; melting
d)
Condensation; evaporation
4.
A bowling ball has more volume than a beach ball.
a)
True
b)
False
5.
When we mixed road salt (white solid) with baking soda (white solid), we observed bubbles and the bag changed temperature. There was also a white solid substance in the bottom of the bag. In this experiment, how could we have tested if the white solid was a new substance?
a)
Test the solubility and compare it to the solubility of the starting substances
b)
Measure the mass and compare it to the mass of the starting substances
c)
Measure the volume and compare it to the volume of the starting substances
d)
Observe the color and compare it to the color of the starting substances
6.
_____________ are characteristics that help identify substances and tell them apart
a)
Properties
b)
Qualities
c)
Reactions
d)
Molecules
7.
Which of these are substances?
a)
A only
b)
A and C
c)
D and A
d)
A and B
8.
Which of the following is NOT a compound?
a)
O2
b)
MgO
c)
CH4
d)
H2O
9.
Which of the following is a chemical change?
a)
Ice cream melting
b)
Water boiling
c)
A cake baking
d)
White liquid and red liquid combining to make pink liquid
10.
A piece of gold has a mass of 40g and a volume of 2 cm3. What is its density?
a)
1/20 g/cm3
b)
80 g/cm3
c)
20 g/cm3
d)
40 g/cm3
11.
Why is bubbling often a signal that a chemical reaction is occurring?
a)
It shows that the temperature is changing
b)
It shows that a new substance (gas) is being formed
c)
It shows that the state of matter is changing
d)
It shows that a substance has reached its boiling point
12.
What are the reactants in this chemical equation?
a)
Water and carbon dioxide
b)
Water, carbon dioxide, heat and light
c)
propane and oxygen
d)
propane, oxygen and carbon dioxide
13.
Does this image prove the Law of Conservation of Mass?
a)
Yes
b)
No
14.
Taylor mixes road salt with baking soda in an open beaker. The mass of the substances before the reaction is 20 g. When the substances are mixed, they react - they form bubbles and the temperature rises. The mass after the reaction is 19 g. Why did the mass decrease?
a)
Mass always decreases during a chemical reaction
b)
The mass decreases if a reaction takes place in an open system and one or more products is a gas
c)
The mass increases because a new substance is formed
d)
Taylor made a mistake because the mass can never change in a chemical reaction
15.
Bananas turning rotten: chemical change or physical change?
a)
Chemical Change
b)
Physical Change
16.
Does this image of water molecules represent boiling or electrolysis?
a)
Boiling
b)
Electrolysis
17.
Which is the correct word equation for the following reaction?
When iron is exposed to air and water over time, a chemical reaction occurs. The iron (Fe) reacts with the oxygen (O2) to form a reddish substance called iron oxide (Fe2O3). You may have seen this on buildings, subway rails, or pipes that are made of iron and are outside!
When iron is exposed to air and water over time, a chemical reaction occurs. The iron (Fe) reacts with the oxygen (O2) to form a reddish substance called iron oxide (Fe2O3). You may have seen this on buildings, subway rails, or pipes that are made of iron and are outside!
a)
Iron Oxide --> Iron + Oxygen
b)
Iron Oxide + Oxygen --> Iron
c)
Iron + Oxygen --> Iron Oxide
d)
Iron + Iron Oxide --> Oxygen
18.
The difference between an atom and a molecule is that:
a)
Atoms are made of more than one molecule
b)
Molecules are made of two atoms of the same type stuck together
c)
Molecules are made of more than one atom stuck together
d)
Molecules are small and atoms are large.
19.
Based on this chemical equation, for every molecule of calcium chloride used , how many molecules of sodium bicarbonate (baking soda) are used?
a)
1
b)
4
c)
6
d)
2
20.
Which is the best an example of an object with a large volume and a low density?
a)
A cotton ball
b)
A rock
c)
A plastic bag full of quarters
d)
A pillow
21.
Which of the following shows a physical change of the original substance?
a)
A and C
b)
B and C
c)
A and D
d)
B and D
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