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Reversible Change

Assertion: Me...

Question

Assertion: Melting of candle wax is a physical change, and the melted wax can again be obtained as solid wax upon the removal of heat.
Reason: All the physical changes can be reversed.

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Q. Statement 1: Melting of candle wax is a physical change and the melted wax can again be obtained as solid wax upon the removal of heat.

Statement 2: Burning of candle wick is a chemical change and the wick cannot be obtained back in its original form.

Based on the given statements, choose the right option.

Q. Statement 1: Melting is a physical change as the melted wax can again be obtained as solid wax upon the removal of heat.
Statement 2: Burning of wax is a chemical change, as once the wax has been burnt, it cannot be obtained back in its original form.
Which of the following statements is correct?

The melting of wax or the burning of wax in a candle can both be classified as physical changes

Q. Assertion :The burning of a candle is both a physical and a chemical change. Reason: Burning of candle melts the wax and hence physical state of wax has changed from solid to liquid. Again the wax combines with the atmosphere oxygen and changes to carbon dioxide, heat and light.

The melting of wax of a candle is a physical change or a chemical change ?

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