Question

plz do this question and plz do it short 2 and 3

Answer 1

burning of a candle is an example which shows physical and chemical change.

Burning of Candle- The wax is melting , which is a physical change and it's combusting which is chemical change.

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Answer 2

BASIS FOR COMPARISONPHYSICAL CHANGECHEMICAL CHANGE
meaning- physical change refers to a change in which the molecules are rearranged but their internal composition remains same.
Chemical Change is a process in which the substance transforms into a new substance, having different chemical composition.

Example-(physical) tearing of paper, melting/freezing of water, cutting of trees, etc.
(chemical)Burning of wood/trees/paper, rusting of iron, setting of curd, etc.

(physical) Reversible
(chemical) irreversible

(physical) original matter Can be recovered
(chemical) can't be recovered

3. BURNING OF CANDLE :
when the wax of candle melts it is defined as physical change but when the wick burns it is chemical change.

-HOPE IT HELP.
- R26.