7.2.3 Modeling Conservation of Mass

Front

What does the law of Conservation of Mass state?

Back

Matter cannot be created or destroyed.

Front

What happens to matter during a chemical reaction?

Back

Matter can only be transformed or changed.

Front

What is a chemical equation?

Back

Chemical formulas and symbols are written to represent a reaction.

Front

What is the process of combining substances to form new substances called?

Back

Chemical reaction.

Front

What occurs when a chemical reaction happens?

Back

Molecules and atoms are rearranged.

Front

What is the definition of a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products).

Front

What is meant by 'reactants' in a chemical equation?

Back

The starting substances that undergo a chemical change.

Front

What are 'products' in a chemical reaction?

Back

The new substances formed as a result of a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.