Chemical Reactions Test

Front

What is the chemical formula for hydrogen gas?

Back

H₂

Front

What is the chemical formula for oxygen gas?

Back

O₂

Front

What is the chemical formula for water?

Back

H₂O

Front

What type of reaction starts with only one reactant?

Back

Decomposition reaction.

Front

What are the coefficients that balance the equation NH₄ + NO₂ → N₂ + H₂O?

Back

1, 1, 1, 2

Front

How many atoms of nitrogen are in the compound 4 Mg(NO₃)₂?

Back

8

Front

What type of reaction creates only one product?

Back

Synthesis reaction.

Front

What is a balanced chemical equation?

Back

An equation where 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.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a reaction.