Conservation of Matter Test Review

Front

What happens to the weight of ice when it melts?

Back

The weight of ice does not decrease when it melts; it remains the same.

Front

What is the total weight when combining 80 grams of water and 30 grams of salt?

Back

110 grams.

Front

Why might the weight of a reaction change from beginning to end?

Back

Some atoms can escape if the reaction is not in a closed system.

Front

What does conservation mean?

Back

To preserve.

Front

Does the weight of vinegar and baking soda decrease when placed in a beaker with a balloon covering the opening?

Back

No, it does not decrease.

Front

What is the principle of conservation of matter?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

If 50 grams of a substance reacts with 50 grams of another substance, what is the total weight of the products?

Back

100 grams.

Front

What is an example of a closed system in a chemical reaction?

Back

A sealed container where no matter can enter or leave.

Front

What happens to the atoms in a chemical reaction?

Back

Atoms are rearranged but not created or destroyed.

Front

What is an open system in terms of chemical reactions?

Back

A system where matter can enter or leave.