What Happens When Fuels Burn?

What is the main purpose of burning fuels according to the passage?

• To release energy for various uses

• To create new substances

• To destroy matter

• To produce visible gases

According to the passage, what happens to the atoms during a chemical reaction when fuels burn?

• They disappear completely

• They rearrange to form new substances

• They turn into energy

• They become visible

What did Antoine Lavoisier discover about matter during chemical reactions?

• Matter can be created or destroyed

• Matter changes into energy

• The mass of reactants and products is the same

• New atoms are created

Why does burning hydrogen fuel have a less harmful effect on Earth's climate compared to carbon-containing fuels?

• It produces only water as a byproduct

• It releases more energy

• It is easier to store

• It is cheaper to produce

What is a major challenge in using hydrogen as a fuel for vehicles?

• It is expensive to produce and store

• It produces carbon dioxide

• It is not efficient

• It is not available in pure form