Chemical Reactions

Front

What is a physical change?

Back

A physical change is a change that results in no new substances being formed. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new substances. Examples include burning wood, rusting, and cooking food.

Front

What is a catalyst?

Back

A catalyst is a substance that speeds up a chemical reaction without being consumed in the process.

Front

What is an example of a chemical change?

Back

Burning wood, rust on a car, and cooking food are all examples of chemical changes.

Front

What is an example of a physical change?

Back

Freezing water is an example of a physical change.

Front

What happens during a chemical reaction?

Back

During a chemical reaction, reactants are transformed into products, resulting in new substances.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What are reactants?

Back

Reactants are the starting substances in a chemical reaction that undergo change.

Front

What are products?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is an example of a physical property?

Back

Color, shape, and boiling point are examples of physical properties.