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Differences between Physical and Chemical changes

Which of the ...

Question

Which of the following can be classified into physical and chemical change? Also mention whether it's a reversible or irreversible change

Melting of chocolate

Rusting of iron

Baking of pizza

Cutting of vegetables

Digestion of food

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Solution

Melting of chocolate: Physical change and Reversible change

Rusting of iron: Chemical change and Irreversible change

Baking of pizza: Chemical change and Irreversible change

Cutting of vegetables: Physical change and Irreversible change

Digestion of food: Chemical change and Irreversible change

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Similar questions

Classify the following processes into physical or chemical changes:

(i) Beating of aluminium metal to make aluminium foil.
(ii) Digestion of food.
(iii) Cutting of a log of wood into pieces.
(iv) Rusting of iron.

Q. Write True (T) or False (F) against the following statements in the given brackets:
1. Digestion of food is a Q irreversible change. ( )
2. Rusting of iron is a reversible change. ( )
3. Melting of wax is a reversible change. ( )
4. Curding of milk is an irreversible change. ( )
5. Melting of ice cream is a reversible change. ( )

Q. Group the following into physical change and chemical change.

Dissolving salt in

H_{2} O,

burning of a fuel, rusting or iron, melting of ice cube.

Classify the following as physical or chemical changes:

(i) Cooking of food (ii) Boiling of water

(iii) Cutting of trees (iv) Dissolving salt in water

(v) Digestion of food (vi) Melting of ice

Q. Fill in the blanks with the correct words.
1. Melting of ice-cream is an example of a/an .................... (reversible/irreversible) change.
2. Ripening of fruits is an example of a/an .................... (reversible/irreversible) change.
3. Cooking of foood is an example of a/an .................... (reversible/irreversible) change.
4. Breaking of glass is a .................... (physical/chemical) change.
5. .................... (Heating/Cooling) causes steam to change into water.

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