Question

list our 5 differences between physical and chemical change 9th std​

Answer 1

PHYSICAL CHANGE

• Physical changes are reversible
• No new substance is formed in Physical change.
• Physical change is a temporary change.
• No energy is produced.
• Physical changes only affect the Physical properties I.e, shape,size ,etc

CHEMICAL CHANGE

• Chemical changes are irreversible.
• A new substance with new properties is formed in Chemical change.
• Energy is produced.
• Chemical changes affect both physical and Chemical properties.

EXAMPLE FOR CHEMICAL CHANGE:Digestion of food,burning of coal.

EXAMPLE FOR PHYSICAL CHANGE:Melting of wax,Freezing of water.

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Answer 2

PHYSICAL CHANGE

• Physical changes are reversible
• No new substance is formed in Physical change.
• Physical change is a temporary change.
• No energy is produced.
• Physical changes only affect the Physical properties I.e, shape,size ,etc

CHEMICAL CHANGE

• Chemical changes are irreversible.
• A new substance with new properties is formed in Chemical change.
• Energy is produced.
• Chemical changes affect both physical and Chemical properties.