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WorksheetsCh. 12 Changes in Matter Test
Total questions: 21
Worksheet time: 17mins
Name
Class
Date
1.
A substance used in a chemical reaction.
a)
polymer
b)
reactant
c)
product
d)
combustion
2.
A large molecule made of many smaller units connected together.
a)
reactant
b)
product
c)
polymer
d)
chemical change
3.
A formula that describes a chemical reaction.
a)
chemical equation
b)
physical change
c)
polymer
d)
reactant
4.
The process of burning.
a)
product
b)
reaction
c)
polymer
d)
combustion
5.
A change in some properties of matter without forming a new kind of matter.
a)
physical change
b)
chemical change
c)
chemical equation
d)
combustion
6.
A substance made during a chemical reaction.
a)
combusion
b)
reactant
c)
product
d)
chemical equation
7.
A change of one kind of matter into a new kind of matter with different properties.
a)
physical change
b)
chemical change
c)
chemical equation
d)
combustion
8.
Which change below is a chemical change?
a)
One kind of matter changes phases.
b)
One kind of matter changes its shape and volume.
c)
One kind of matter keeps its identity and properties.
d)
One kind of matter changes into another kind of matter with different properties.
9.
Which of the following is an example of combustion?
a)
a log burning in a fire
b)
a dry sponge expanding in water
c)
a piece of gray metal turning to rust
d)
a container of milk souring to cottage cheese
10.
Look at the chemical equation.
C + O2 → CO2
carbon + oxygen → carbon dioxide
What is the product of the reaction?
C + O2 → CO2
carbon + oxygen → carbon dioxide
What is the product of the reaction?
a)
carbon
b)
oxygen
c)
dioxide
d)
carbon dioxide
11.
Which of the following describes what happens during a chemical reaction?
a)
Matter is destroyed.
b)
Matter is not changed.
c)
Matter is created and destroyed.
d)
Matter is neither created nor destroyed.
12.
Which type of chemical reaction combines two different elements?
a)
reduction reaction
b)
replacement reaction
c)
combination reaction
d)
decomposition reaction
13.
A scientist used universal indicator paper to test an unknown substance. The indicator paper turned red. What can the scientist conclude about he substance?
a)
It is a weak acid.
b)
It is a weak base.
c)
It is a strong acid.
d)
It is a strong base.
14.
What bacteria-killing substance did Alexander Fleming accidentally discover that became an important life-saving medicine?
a)
insulin
b)
aspirin
c)
vitamins
d)
penicillin
15.
A tent is made from a polymer developed in a chemical laboratory. What is the name of the polymer?
a)
silk
b)
wool
c)
nylon
d)
cotton
16.
What should you do first before using chemicals at home?
a)
Read the directions.
b)
Put on safety goggles.
c)
Ask a friend what do do.
d)
Wear a long shirt and pants.
17.
What kind of reaction occurs when two compounds split apart and the parts switch places, as shown in the reaction below?
FeS + 2HCl → FeCl2 + H2S
FeS + 2HCl → FeCl2 + H2S
a)
reduction reaction
b)
replacement reaction
c)
combination reaction
d)
decomposition reaction
18.
How can scientists use a chemical reaction to separate a fossil from limestone without damaging the fossil?
a)
They can use vinegar to dissolve the limestone because it will not damage the fossil.
b)
They can use a chisel to chip away at the limestone.
c)
They can place it in a fire and burn it.
d)
They can put in the freezer for safe keeping.
19.
Is matter (mass) added or lost during a chemical reaction?
a)
added
b)
lost
c)
matter is neither added or lost (the Law of Conservation of Mass)
d)
It is both added and lost
20.
What is the volume of a rectangular prism that has a length of 4 cm, a width of 2 cm, and a height of 3 cm?
a)
24 cm3
b)
12 cm3
c)
9 cm3
d)
15 cm3
21.
How does treated rubber, which is heated and has sulfur added, have different properties from untreated rubber?
a)
Treated rubber becomes brittle and breaks easy.
b)
Treated rubber is the exact same as regular rubber.
c)
Treated rubber becomes more durable and doesn't crack and break.
d)
Treated rubber gets is extremely gooey.
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