Question

10 differences between physical and chemical changes

Answer 1

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Answer 2

Answer:

PHYSICAL CHANGE :

• No new substance is formed.
• Only physical properties of matter change.
• For Example : Melting of wax.
• A physical change is a temporary change.
• A physical change is reversible.
• Change that occurs without a change in chemical composition.
• In a physical change only physical properties such as colour, physical state, density , volume etc. change; chemical properties remain unchanged.
• The original form of substance can be regained by simple physical methods.
• Example : Change of state ice to water to gas.

CHEMICAL CHANGE :

• A new substance is formed.
• Chemical properties of substance change.
• For Example: Burning of wax
• A chemical change is a permanent change
• A chemical change is a irreversible
• Chemical change brings difference in chemical properties
• In a chemical change, chemical composition and chemical properties undergo a change
• Original methods cannot be obtained by simple physical methods
• Example : Burning.

Explanation:

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