Question

State differences between a physical change and chemical change?
(At least 3 points)

Answer 1

Hey dude here is your Answer------------------------

*Physical change

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=> No new substance is formed here.

=> A physical change is a temporary change.

=>The mass of a substance does not alter in a physical change.

=> A physical change is easily reversible .

*Chemical change

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=>A new substance formed in a chemical change.

=> A chemical change is permanent change .

=>A mass of a substance does alter in a chemical change.

=>The chemical change is usually irreversible....

Hope it helps you✌️✌️

Answer 2

Answer:

PHYSICAL CHANGES

- The chemical composition of a substance does not change.

- Change is only in the state of matter and not in the chemical identity.

-Examples include- Vaporising of water and dissolution of sugar in water.

- Most changes are reversible.

- No new substances are formed. For example,

Ice → Water → Steam

 CHEMICAL CHANGES

- The chemical composition of a substance changes.

- Change is in chemical identity, but may or may not be in the state of matter.

- Examples include- Rusting of Iron, cooking of food etc.

- Most changes are irreversible.

- New substances are formed.For example,

methane → carbon dioxide and water