Learning Check - Chemical Reactions/Counting Atoms

Front

What is the process of combining substances to form a new substance called?

Back

Synthesis

Front

What does it mean if a chemical equation is not balanced?

Back

It means that the number of atoms of each element is not the same on both sides of the equation.

Front

In the chemical equation CH₄ + 2 O₂ → CO₂ + 2 H₂O, what is CH₄ considered?

Back

Reactant

Front

How many oxygen atoms are present in the compound 4LiNO₃?

Back

12

Front

What is the generalized equation for a synthesis reaction?

Back

A + B → AB

Front

What is the law that states that matter cannot be created or destroyed in a chemical reaction?

Back

Law of Conservation of Mass

Front

What is the term for a reaction where a single compound breaks down into two or more products?

Back

Decomposition Reaction

Front

What is the term for a reaction where an element displaces another in a compound?

Back

Single Replacement Reaction

Front

What is the term for a reaction where two compounds exchange ions to form two new compounds?

Back

Double Replacement Reaction

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.