Balancing Chemical Equations

Front

What happens in a decomposition reaction?

Back

The elements break down.

Front

What is the total mass of the reactants compared to the total mass of the products at the end of a chemical reaction?

Back

The mass is the same.

Front

True or False: Chemical equations use symbols instead of words to summarize chemical reactions.

Back

True.

Front

Why is the equation H2 + O2 → H2O not balanced?

Back

Each side of the equation has a different number of oxygen atoms.

Front

What is an example of a synthesis reaction?

Back

Na + Br2 → NaBr.

Front

What is a chemical equation?

Back

A way to show a chemical reaction using symbols.

Front

What are reactants?

Back

The starting substances in a chemical reaction.

Front

What are products?

Back

The substances formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

Making sure the number of atoms for each element is the same on both sides.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.