list 2 physical changes and 3 chemical changes during diwali festival.

Making a rangoli is a physical change as the colours can again be brought to their powdery form.
Burning a candle is both a physical as well as a chemical change as the wax can be again moulded to a candle but the wick burns when lighted giving off soot and smoke.
Lighting a diya is a chemical change as the oil is used up in lighting the wick of cotton that is a chemical reaction and irreversible.
Burning of a cracker is a chemical change as it involves a chemical reaction when lit up.

Preparation of sweets is a chemical change as cooking leads to changes in the chemical composition of the ingredients.

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