Define a physical change and its characteristics. Give three examples of physical change.
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1.biting of an apple
2.growing of a child into adult
3.growing of a plant
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Answer:
Physical change:
Some changes affect only the physical properties of the substance that is undergoing change. Physical properties include shape, size, colour and state of matter.
Some properties of physical changes are:
A physical change is temporary.
No new substance is formed when a physical change takes place.
Forms of energy, such as heat, light and electricity, are neither emitted nor absorbed in a physical change.
A physical change is generally reversible.
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