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WorksheetsPhysical and Chemical changes M
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Which of the following is a physical change?
a)
burning paper
b)
shredding paper
c)
having a precipitate form
d)
making a new substance
2.
Which of the following is a sign that a chemical reaction has occurred?
a)
changing in shape
b)
melting
c)
formation of a gas
d)
dissolving
3.
Is hammering wood together a physical or chemical change
a)
chemical
b)
physical
4.
Which of the following is NOT an example of a physical change
a)
souring of milk
b)
breaking a pencil
c)
coloring a picture
d)
freezing water
5.
Adding baking soda to vinegar together and it fizzes and produces carbon dioxide is an example of what change
a)
physical
b)
chemical
6.
what is the definition of physical change?
a)
any change that results in the formation of new chemical substances
b)
rusting
c)
changes affecting the form of a chemical substance, but not its chemical composition
d)
any property that is measurable, whose value describes a state of a physical system
7.
One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?
a)
evaporation; chemical change
b)
condensation; physical change
c)
evaporation; physical change
d)
condensation; chemical change
8.
Which process is an example of a purely physical change?
a)
A peanut butter sandwich is eaten and broken down by enzymes in the stomach
b)
Carrots are cut into small pieces and mixed into a salad.
c)
Sodium metal and chlorine gas are combined to form sodium chloride, or table salt.
d)
Sodium metal and water are combined to form a basic compound and a flammable gas.
9.
What is freezing?
a)
an increase in size
b)
change in state where a liquid changes to a gas
c)
a change in state where a liquid changes to a solid
d)
a change in state where a solid changes into a liquid
10.
What is sublimation?
a)
where a gas turns into a liquid
b)
where a gas turns into a solid
c)
where a solid turns into a liquid
d)
where a solid turns into a gas
11.
In what state based on the particle models are the particles of an object moving really fast and are far apart from one another.
a)
solid
b)
liquid
c)
gas
d)
plasma
12.
In which state of matter, based on the particle model, are the particles loosely held together and flow between one another
a)
solid
b)
liquid
c)
gas
d)
plasma
13.
In which state of matter, based on the particle model, are the particles held tightly together and are very rigid.
a)
solid
b)
liquid
c)
gas
d)
plasma
14.
What is condensation?
a)
change of state from solid to liquid
b)
change of state from liquid to solid
c)
change of state from gas to liquid
d)
change of state from liquid to gas
15.
Out of the three states of matter which one is the most compressible?
a)
solid
b)
liquid
c)
gas
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