2.2 What Burns? What Melts? Flashcard

Front

What causes the fire to go out?

Back

Running out of fuel.

Front

What is burning also known as?

Back

Combustion.

Front

At what temperature do wood molecules begin to break down and react with oxygen?

Back

150°C.

Front

What is the temperature at which a material burns called?

Back

Flash point.

Front

What happens to the molecules in a solid chocolate bar when energy is added to it?

Back

They gain energy and move around more.

Front

What is the process of a substance changing from a solid to a liquid called?

Back

Melting.

Front

What is the process of a substance changing from a liquid to a gas called?

Back

Evaporation.

Front

What is the temperature at which a solid turns into a liquid called?

Back

Melting point.

Front

What is the term for the energy needed to start a fire?

Back

Ignition energy.

Front

What is the main component of air that supports combustion?

Back

Oxygen.