Question

write three points for physical and chemical change.
please tell me .
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Answer 1

Answer:

Physical Change    Chemical Change

When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.          When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.

Physical change is a temporary change.   A chemical change is a permanent change.

A Physical change affects only physical properties i.e. shape, size, etc.       Chemical change both physical and chemical properties of the substance including its composition

Answer 2

Answer:

Physical Change--

• A Physical change affects only physical properties i.e. shape, size, etc.
• Physical change is a temporary change.
• A Physical change affects only physical properties i.e. shape, size, etc.

Chemical Change--

• Chemical change both physical and chemical properties of the substance including its composition.
• A chemical change is a permanent change.

• Chemical change both physical and chemical properties of the substance including its composition.

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