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Physical And Chemical Changes- TEST REVIEW
Test Description: Test review
Instructions: Answer all questions to get your test result.
1) The chemical properties of paper are changed when which of the following is done to it?
A
folding
B
tearing
C
cutting
D
burning
2) Which of the following describes using a physical change to separate a mixture?
A
Melting a chocolate bar with almonds to remove the almonds
B
Heating water to be able to dissolve more sugar in it
C
Adding vinegar to baking soda to produce bubbles from a gas
D
Burning wood to produce thermal energy to cook food
3) In which of the following actions does a physical change occur to separate a mixture?
A
Adding sand to a beaker of water
B
Freezing a solution of water and sugar
C
Stirring chocolate syrup into milk
D
Evaporating water from salt water
4) In which of the following examples is a mixture separated by using physical properties?
A
Freezing juice to make flavored ice
B
Using a filter to get the sand out of puddle water
C
Making coffee by using heated water
D
Stirring water and salt to make salt water
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
size
B
color
C
state
D
weight
6) Ice cubes are placed on a table in a warm room. What happens to the ice particles?
A
The particles become larger.
B
The particles change shape.
C
The particles change color.
D
The particles move faster.
7) What causes water to turn into a solid when placed in a freezer?
A
The freezer takes heat from the water.
B
The freezer needs electricity to work.
C
The freezer keeps the water in darkness.
D
The freezer adds more weight to the water.
8) When ice melts and becomes a liquid, this is a physical change. We know this because
A
the change takes a long time.
B
the change requires extreme heat.
C
the change can't be reversed.
D
the change produces no new substance.
9) The particles in a substance move differently in different states of matter. Which of the options below shows the states of matter, in order, from the one in which particles move the least, to the one in which particles move the most?
A
Solid . .Gas... Liquid
B
Liquid...Gas....Solid
C
Solid...Liquid...Gas
D
Gas...Solid... Liquid
10) Students heat a white solid in a test tube over a flame. What observation would tell the students that the solid has become a new substance?
A
The solid begins to melt within the test tube.
B
The color of the solid changes to amber.
C
The temperature of the solid increases.
D
The solid is in the form of crystals.
*select an answer for all questions
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