M5 Chemical Reactions and balancing Review

Front

What does the arrow in a chemical equation represent?

Back

Yields

Front

What is the Law of Conservation of Mass?

Back

Mass cannot be created or destroyed.

Front

What is the first step in balancing a chemical equation?

Back

Write out the equation.

Front

What is the Law of Conservation of Energy?

Back

Energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.

Front

How can we tell that a chemical reaction has occurred?

Back

A new substance is produced.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical 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 a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate the number of molecules.

Front

What is a subscript in a chemical formula?

Back

A number that indicates the number of atoms of an element in a molecule.