Question

When a candle burns both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which physical and chemical changes take place together.

Answer 1

Answer:

when a candle burns the chemical change take place in its flame and a physical change in its wax

Explanation:

when the flame burns it changes oxygen to give carbon dioxide which is a chemical change

the wax is changing its state from solid to liquid and then again from solid which is a physical change there is no change in its chemical state

LPG is another example of a familiar process in which both the chemical and physical changes take place. LPG is present in liquid form in the cylinder. When it comes out of the cylinder, it converts into gaseous form which is a physical change. It undergoes chemical change when gas burns in air.

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