State whether the given statements is true or false: When a candle burns, both physical and chemical changes take place.
Physical change
Chemical change
Changes during the burning of the candle
Hence the statement is true.
Question 11
State whether the following statements are true or false:
(a) When a candle burns, both physical and chemical changes take place. (b) Anaerobic bacteria digest animal waste and produce biogas. (c) Ships suffer a lot of damage though they are painted. (d) Stretching of rubber band is not a physical change.
During burning of a candle, both physical and chemical changes take place
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.