Which of the following are physical changes and which are chemical changes? Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
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- Physical change: Melting of candle wax, mixing of iron filings and sand, breaking a piece of chalk, cutting a piece of paper.
- Chemical change: Burning of candle wax, burning of wood, burning of piece of paper.
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