Question

write difference between Physical and Chemical Change .​

Answer 1

Answer:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition

Explanation:

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Answer 2

Answer:-

Differences between Physical and Chemical change are:-

Physical Change

• A physical change brings about changes only in the physical properties of the substance such as physical state, shape, size, etc.

• No new substance is formed in a physical change.

• It is a temporary change.

• Physical change can be easily reversed.

• There is no change in chemical composition of the substance.

• During a physical change, energy change may or may not be observed.

Chemical Change

• A chemical change brings about changes in chemical properties of the substance.

• New substances are formed during the chemical change.

• It is a permanent change.

• Chemical change cannot be reversed.

• There is always a change in the chemical composition of the substance.

• During a chemical change, energychange (evolution or absorption of heat,light, etc) always occurs.