Page 49 - Science Tour 3
P. 49
REFLECT
What is physical change?
If a piece of paper is cut into smaller pieces, a change in the shape
and the size occurs. The substance remains unchanged. It is still a
paper but in a different condition. This is called a physical change.
What is chemical change?
If a piece of paper is burned, it changes into different substances that
are not paper. This is called a chemical change.
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