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WorksheetsPhysical and Chemical Changes
Total questions: 20
Worksheet time: 37mins
Name
Class
Date
1.
The diagram below shows changes happening to water in a specially shaped bottle. What changes did the water undergo?
a)
melting and then freezing
b)
freezing and then evaporation
c)
condensation and then melting
d)
evaporation and then condensation
2.
Which describes water vapor leaving a river and going into the air?
a)
condensation
b)
evaporation
c)
precipitation
d)
runoff
3.
To see an atom, which of these could be used?
a)
the human eye
b)
a magnifying glass
c)
an electron microscope
d)
a classroom microscope
4.
A glass of hot water is sitting on a table. Which is true about the glass of hot water once a spoonful of salt has been completely dissolved in it?
a)
It weighs more
b)
It weighs less
c)
It weighs the same
d)
none of these
5.
A mixture of sand and gravel can be separated by putting it in a container with holes that only the sand can pass through. This method works to separate the mixture because sand and gravel differ in which physical property?
a)
texture
b)
state of matter
c)
color
d)
size
6.
Which of the following is NOT a clue that a chemical change has occurred?
a)
change of state of matter
b)
color change
c)
production of a gas
d)
production of heat
7.
The particles in a _____ are the farthest apart and move the fastest.
a)
gas
b)
solid
c)
banana
d)
liquid
8.
A physical change occurs when a substance _____.
a)
breaks into individual elements
b)
becomes a new substance
c)
changes from an acid to a base
d)
changes shape, size, and form
9.
Mark is observing a burning candle. He notices the melted wax drips down the side of the candle and hardens again. The candle has _____.
a)
formed a new substance
b)
undergone a physical change
c)
undergone a chemical change
d)
undergone a physical and chemical change
10.
A chemical change creates a _________.
a)
change in volume
b)
new substance
c)
mixture
d)
solution
11.
Weight is the measure of the pull of _____________ on an object.
a)
weight
b)
gravity
c)
mass
d)
force
12.
A different chemical substance is formed when _____.
a)
water boils
b)
metal rusts
c)
ice melts
d)
rock is crushed
13.
When there's a chemical reaction, the original state of matter is changed in what way?
a)
temporarily
b)
partially
c)
permanently
d)
initially
14.
Two children in a wading pool notice that the water level is lower than it was the week before. What happened to the water?
a)
Some of the water evaporated.
b)
The pool absorbed some of the water.
c)
Condensation caused the water to disappear.
d)
Toys in the pool absorbed some of the water.
15.
Mixtures can be _____________ into the substances that make them up.
a)
separated
b)
placed
c)
melted
d)
blended
16.
__________ describes how much substance something contains.
a)
mass
b)
density
c)
boiling point
d)
melting point
17.
What type of change is taking place when a pond freezes in the winter?
a)
a physical change
b)
a material change
c)
a chemical change
d)
no change
18.
Which is NOT an example of condensation?
a)
Dew is found on the grass on a summer morning.
b)
Drops of water form on a cold can of soda on a hot day.
c)
A bucket of water left uncovered eventually becomes empty.
d)
The walls of a bathroom are damp after someone takes shower.
19.
A change in a state of matter is represented in the diagrams below. Which statement describes the process occurring from beaker 1 to beaker 2?
a)
Solid ice is changing into gas.
b)
Liquid water is changing to gas.
c)
Solid ice is melting to liquid water.
d)
Gaseous steam is condensing to solid ice.
20.
You are hungry and decide to make breakfast. You crack a raw egg into a frying pan. You cook your egg and eat it. The egg when through a ____________.
a)
no change
b)
physical change
c)
chemical change
d)
some change
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