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Name __________________________________________ Date ________________________________
Matter and Physical Change
Work on your own or with a partner and answer the questions that follow.
1. Box A is filled with stones. Box B contains the same stones ground up into a fine powder.
a) Have the stones gone through a physical change? Explain.
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b) If you used a scale to measure for mass, would the mass of Box A and
Box B be equal? Why?
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c) Is this physical change reversible? Explain your ideas.
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Box A
Box B
2. A dish of water is left uncovered. After three days, the water is gone.
a)Has the water gone through a physical change? Explain.
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b) Since the water has disappeared from the dish, is this physical change
reversible? Explain your ideas.
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Copyright © 2009 Scholastic Canada Ltd. This page may be reproduced for classroom use by the purchasing school.
Lesson 7
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7
Name __________________________________________ Date ________________________________
Matter and Physical Change (cont.)
3. Iron at a very hot temperature is a liquid. As the liquid iron cools, it shrinks
and turns into a solid.
a) Has the iron gone through a physical change? Explain.
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b) As the liquid iron cooled, it shrank. Does this mean that the solid iron
has less mass than the liquid iron? Explain your ideas.
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c) Is the change in the iron reversible? Explain.
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4.Draw a diagram of the particles of water going from a liquid to a solid, and
back to a liquid.
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Lesson 7
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Copyright © 2009 Scholastic Canada Ltd. This page may be reproduced for classroom use by the purchasing school.