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What can we conclude from burning of candle in respect to physical and chemical changes? [3 MARKS]
What can we conclude from burning of candle in respect to physical and chemical changes? [3 MARKS]
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Solution
Reasoning out:1.5 Marks for each change
When a candle burns, both physical and chemical changes take place. On burning the candle wax melts but can be solidified again on cooling. This shows that melting of wax is a physical change.
Burning of candle also produces light and carbon dioxide. Hence, it is also a chemical change.
Reasoning out:1.5 Marks for each change
When a candle burns, both physical and chemical changes take place. On burning the candle wax melts but can be solidified again on cooling. This shows that melting of wax is a physical change.
Burning of candle also produces light and carbon dioxide. Hence, it is also a chemical change.
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