Definition of Fuel and Energy Transformation

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What is the process called when a fuel is burned in the presence of an oxidant to release energy?

Condensation

Evaporation

Combustion (correct)

Oxidation

Why do combustion reactions produce a lot of heat?

Due to the formation of water and carbon dioxide

Because they are endothermic reactions

Because they involve high levels of oxygen

As a result of more energy stored in fuel molecules compared to products (correct)

What happens to the leftover energy in a combustion reaction?

It forms new chemical bonds

It is stored in the fuel molecules

It is converted into light energy

It is released as heat energy (correct)

Which molecule is NOT typically formed in a combustion reaction involving hydrocarbons?

Methane Signup and view all the answers

What term describes the property of combustion reactions that release heat?

Exothermic Signup and view all the answers

How do fuels like wood, coal, gas, and oil provide heat, light, or power when burned?

By releasing chemical energy stored in them Signup and view all the answers

What is the source of energy that wood uses to grow and create sugars like glucose?

Light energy from the sun Signup and view all the answers

How did fossil fuels like coal, natural gas, and oil form over millions of years?

By compression of dead plants, animals, and marine life by sediment and rock Signup and view all the answers

What is the common origin of the energy contained in all fuels, including fossil fuels like coal and oil?

Photosynthesis from plants Signup and view all the answers

What distinguishes fossil fuels like coal and oil from wood in terms of how they acquired their energy?

They got their energy through compression over millions of years Signup and view all the answers

Definition of Fuel and Energy Transformation

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Questions and Answers

What is the process called when a fuel is burned in the presence of an oxidant to release energy?

Why do combustion reactions produce a lot of heat?

What happens to the leftover energy in a combustion reaction?

Which molecule is NOT typically formed in a combustion reaction involving hydrocarbons?

What term describes the property of combustion reactions that release heat?

How do fuels like wood, coal, gas, and oil provide heat, light, or power when burned?

What is the source of energy that wood uses to grow and create sugars like glucose?

How did fossil fuels like coal, natural gas, and oil form over millions of years?

What is the common origin of the energy contained in all fuels, including fossil fuels like coal and oil?

What distinguishes fossil fuels like coal and oil from wood in terms of how they acquired their energy?

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