7. Which new materials are formed when a candle burns?

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Solution

Burning of candle is an irreversible change.
Burning of candle will produce carbon dioxide, heat, light and other gases.
When a candle burns, it creates substances such as heat, light soot (unburned carbon particles), and ash, which are all considered chemical changes.

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A hard material X which is mined from the earth is used as a household fuel and also for the generation of electricity at Thermal Power Stations. A soft material Y is also used as a fuel in the form of candles. A gaseous material Z which occurs along with petroleum is increasingly being used as a fuel in running vehicles in its compressed form.
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7. Which new materials are formed when a candle burns?

Burning of candle is an irreversible change.Burning of candle will produce carbon dioxide, heat, light and other gases.When a candle burns, it creates substances such as heat, light soot (unburned carbon particles), and ash, which are all considered chemical changes.

Burning of candle is an irreversible change.
Burning of candle will produce carbon dioxide, heat, light and other gases.
When a candle burns, it creates substances such as heat, light soot (unburned carbon particles), and ash, which are all considered chemical changes.