Conservation of Matter

Front

What is the Conservation of Matter?

Back

The principle that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What happens to matter when something burns?

Back

It often escapes as gas, but the total amount of matter remains the same.

Front

If a candle burns and gets shorter, where does the wax go?

Back

The wax burns and releases gases into the air.

Front

What is an example of matter changing form?

Back

When ice melts into water, it changes from solid to liquid but the amount of matter stays the same.

Front

What happens to the weight of a substance when it dissolves in water?

Back

The total weight of the liquid increases by the weight of the substance added.

Front

If 25 grams of sugar dissolves in 150 grams of water, what is the total weight?

Back

175 grams.

Front

What is an example of matter being converted to gas?

Back

When flash paper burns, it converts to gas.

Front

What does it mean when we say matter is conserved?

Back

It means that the total amount of matter remains constant, even if it changes form.

Front

Can matter disappear?

Back

No, matter cannot disappear; it can only change into different forms.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its chemical composition.