Question

5. Water while freezing releases
energy.
e
C. Write true or false. Correct the false statements.
In a physical change, the chemical composition of the original substance is altered.
2. The melting of wax is a physical change.
3. All changes of state are physical changes.
Condensation refers to the change of state from liquid to gas on cooling.
A chemical change is permanent and irreversible.
6 Mass is created during a chemical change.
D. Classify the following changes into physical and chemical changes.
Melting of wax
2. Magnetization of iron
Digestion of food
4. Burning of a candle
3. Sublimation of iodine
6. Rusting of iron
Stretching a rubber band
8. Burning of a piece of magnesium ribbo​

Answer 1

Answer:

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