Definition of Fuel and Energy Production

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Questions and Answers

What is the main source of energy for wood?

Heat energy

Glucose energy

Chemical energy from burning

Light energy from the sun (correct)

How are fossil fuels like coal and oil formed?

Through chemical reactions in the Earth's core

By compression of layers of sediment and rock over millions of years (correct)

By burning dead animals

By extracting hydrogen from water

What is released when fuels are burned?

Light energy

Water vapor

Glucose

Chemical energy (correct)

Why can gasoline fuel be used in cars?

Because it can produce heat and power when burned Signup and view all the answers

Where did the energy in fossil fuels originally come from?

Sunlight captured by plants millions of years ago Signup and view all the answers

What is the process called when you burn a fuel in the presence of an oxidant?

Combustion Signup and view all the answers

Why are combustion reactions known to be exothermic?

Because they release heat Signup and view all the answers

What are the products of a combustion reaction involving methane and oxygen?

Carbon Dioxide + Water + Energy Signup and view all the answers

Why does combustion release heat energy?

Because the bonds in fuel molecules have less energy than the bonds in water and carbon dioxide Signup and view all the answers

What happens to the excess energy in a combustion reaction?

It is released as heat Signup and view all the answers

Definition of Fuel and Energy Production

Podcast

Questions and Answers

What is the main source of energy for wood?

How are fossil fuels like coal and oil formed?

What is released when fuels are burned?

Why can gasoline fuel be used in cars?

Where did the energy in fossil fuels originally come from?

What is the process called when you burn a fuel in the presence of an oxidant?

Why are combustion reactions known to be exothermic?

What are the products of a combustion reaction involving methane and oxygen?

Why does combustion release heat energy?

What happens to the excess energy in a combustion reaction?

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