Post Winter Break Chemical Reaction Review

Front

How many hydrogen atoms are in the chemical formula 4NH₃?

Back

4 hydrogen atoms

Front

What are the starting materials in a chemical reaction called?

Back

Reactants

Front

In the reaction methane + oxygen turns into carbon dioxide + water, what are methane and oxygen called?

Back

Reactants

Front

What is a substance that is created during a chemical reaction?

Back

Product

Front

What does the number 3 represent in the chemical formula 4NH₃?

Back

Subscript

Front

What is the term for the substances that undergo change in a chemical reaction?

Back

Reactants

Front

What do we call the substances formed as a result of a chemical reaction?

Back

Products

Front

In a chemical equation, what does a coefficient indicate?

Back

The number of molecules or moles of a substance

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting materials, while products are the substances formed.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up the reaction without being consumed.