Chemical Reactions & Equations

Front

What does a balanced chemical equation demonstrate?

Back

The law of conservation of mass.

Front

What type of change occurs when a piece of wood burns?

Back

Chemical change.

Front

What are spectator ions in a chemical reaction?

Back

Ions that do not participate in the reaction and remain unchanged.

Front

How do you balance a chemical equation?

Back

By adjusting the coefficients to ensure the same number of each type of atom on both sides.

Front

What is a physical change?

Back

A change that alters the form or appearance of a substance but does not change its composition.

Front

What is a chemical change?

Back

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

Front

What is the role of coefficients in a chemical equation?

Back

They indicate the relative amounts of reactants and products.

Front

What is the difference between reactants and products?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result.

Front

What is an example of a physical change?

Back

Melting of a candle.

Front

What is an example of a chemical change?

Back

Burning of paper.