The video tutorial explores the fundamental chemical reaction of combustion, highlighting its historical significance and the scientific breakthrough by Antoine Lavoisier, who discovered that substances gain mass when heated in air. Through experiments, it demonstrates how combustion requires a fuel, oxygen, and heat, resulting in energy release. The tutorial also discusses various fuels, including those used in rockets.

Who was the scientist that discovered substances gain mass when heated in air?

• Antoine Lavoisier

• Isaac Newton

• Albert Einstein

• Marie Curie

What happens to iron wool when it is burned?

• It remains unchanged

• It loses mass

• It turns into liquid

• It gains mass

What is formed when iron combines with oxygen during combustion?

• Iron sulfate

• Iron nitrate

• Iron chloride

• Iron oxide

Which of the following is NOT required for combustion?

• A source of water

• A fuel

• An oxygen source

• A source of heat

What type of molecules do rockets use for combustion?

• Hydrogen molecules

• Carbon molecules

• Oxygen molecules

• Nitrogen molecules