U2: Burning Organics

Front

What happens to organic molecules like charcoal when they burn?

Back

They are re-arranged into carbon dioxide and water, which are released into the air.

Front

What is the byproduct of burning wood?

Back

Carbon dioxide and water vapor are released into the air.

Front

Why does a candle wax seem to disappear when it burns?

Back

The wax is transformed into carbon dioxide and water vapor.

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light.

Front

What are the main products of burning organic materials?

Back

The main products are carbon dioxide, water vapor, heat, and light.

Front

What is the law of conservation of mass?

Back

The law states that mass cannot be created or destroyed in a chemical reaction.

Front

How does burning charcoal produce heat?

Back

The chemical reaction of combustion releases energy in the form of heat.

Front

What is the role of oxygen in combustion?

Back

Oxygen is a reactant that combines with organic molecules to produce energy, carbon dioxide, and water.

Front

What happens to the mass of a substance when it burns?

Back

The mass is transformed into gases (like carbon dioxide and water vapor) and energy.

Front

What is ash in the context of burning organic materials?

Back

Ash is the non-combustible residue left after the combustion of organic materials.