SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physical Change
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Chemical Change
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Either A or B
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None of the above
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Detailed explanation-1: -Moulding of clay is a physical change since only the shape and size of clay is changed and there is no formation of a new substance.
Detailed explanation-2: -The potter then bakes the pots in an oven that makes the clay to becomes hard and brittle. Thus, there is a change in the internal structure of clay which makes soft clay hard and brittle. This is a chemical change which is irreversible.
Detailed explanation-3: -Cutting of paper into pieces is a physical change.
Detailed explanation-4: -Melting is an example of a physical change. A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. When we heat the liquid water, it changes to water vapor.