Question

Burning wood in a fireplace is an example of what kind of energy conversion?
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A. Chemical potential energy converting to heat energy
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B. Gravitational potential energy converting to heat energy
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C. Kinetic energy converting to chemical potential energy
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D. Heat energy converting to kinetic energy

Answer 1

Answer:

A. because the wood is stored chemical energy and it is converting into heat energy

Answer 2

Answer:

Chemical potential energy converting to heat energy.

Explanation:

Burning of wood in a fire place or burning of any other compound in presence of oxygen involves combustion. During combustion there is breaking and making of bonds as combustion is a chemical reaction.

For example:

Combustion of carbon gives carbon dixoide:

$C(s)+O_{2}(g)-->CO_{2}(g)$

Combustion is an exothermic reaction, it releases large amount of energy.

Thus in all we are converting the chemical energy of a substance to heat energy during combustion.

Hence combustion involves Chemical potential energy converting to heat energy.