Question

How physical change different from chemical change any three points

Answer 1

Answer:

physical change can be reverse but chemical can not.

physical change is temporary but chemical change is permanent.

In physical change no new substance is form but in chemical change new substance is form.

Answer 2

Answer:

Chemical change=

• Changes that involves the formation of new substances are called chemical changes
• Heat may be given out or absorbed in chemical change
• Evolution of gas or effervescence may be observed.

Physical change=

• Changes that affect only the physical properties of a substance and where no new substance are formed are called physical changes
• A physical change can be either reversible or irreversible
• No new substance is formed in a physical change

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