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All the light a candle makes comes from a chemical reaction known as combustion in which the wax reacts with oxygen in the air to make a colorless gas called carbon dioxide. Water is also produced in the form of steam.

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When the wax was burning, the chemical reaction was changing the Chemical energy turns to heat energy. The Thermal, Mechanical and Kinetic are still the same energies.

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When the candle burns, the chemical energy is transferred into heat energy.

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Types of energy: Thermal, Mechanical, Kinetic and Heat.

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The heat from the flame is melting the wax and forming a puddle directly underneath the flame.

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The types of energy that an unlit candle contains are chemical and potential energy.

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The flame is melting the wax and is forming a small puddle directly underneath the flame.

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While the candle is burning, there are a few things happening.