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Changes Around Us: Physical and Chemical — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceChanges Around Us: Physical and Chemical2 Marks
Question
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.
✓

Answer

Melting of wax is a physical change and burning of wax is a chemical change when a candle burns.
Another example is burning of LPG gas, where gas burning is a chemical change and melting of solid impurities is a physical change.

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