science
Grade-3
Easy
Question
Which one of the following statements is not correct?
- Matter is anything that has mass and space.
- Physical change is where there is no change in color, shape and size.
- When a new substance is formed, we call it physical change.
- When no new substance is formed, we call it physical change
Hint:
When a new substance is formed, we call it physical change.
The correct answer is: When a new substance is formed, we call it physical change.
When a new substance is formed, we call it a chemical change. Physical change is when there is a change in appearance only and no new substance is formed.
A chemical change is irreversible.
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