Chemical Reactions Review

Front

What is a chemical reaction?

Back

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

Front

What is matter?

Back

Anything that has mass and takes up space.

Front

What does the arrow in a chemical equation represent?

Back

The direction of the reaction.

Front

What is a reactant?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is a physical change?

Back

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

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What evidence indicates a chemical change has occurred?

Back

Signs include color change, gas production, temperature change, or formation of a precipitate.

Front

What happens to the properties of substances during a chemical reaction?

Back

The properties of the reactants change to form new properties in the products.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.