Front

What happens to a candle's wax when it burns?

Back

The wax burns and releases gases into the air.

Front

What is evidence for the conservation of matter in a fire snake demo?

Back

The fire snake weighed about the same before and after burning.

Front

Where does the matter go when a fire snake weighs slightly less after it burns?

Back

The matter escapes as gas.

Front

What causes cinnamon rolls to get bigger when baked?

Back

Gas bubbles get larger.

Front

What happens to flash paper when it disappears?

Back

It is converted to gas.

Front

What is the conservation of matter?

Back

The principle that matter cannot be created or destroyed in a chemical reaction.

Front

Can matter change forms?

Back

Yes, matter can change from solid to liquid to gas, but the total amount remains the same.

Front

What is an example of matter changing from solid to gas?

Back

Dry ice sublimating into carbon dioxide gas.

Front

What is a chemical reaction?

Back

A process where substances (reactants) change into new substances (products).

Front

What is an example of a chemical reaction?

Back

Burning wood, which produces ash, smoke, and gases.