8th Grade - Chemical Equations

Front

A molecule is smaller than an atom.

Back

False

Front

In a reaction A + B ----> C, if reactant A has 5g and product C has 9g, how many grams does reactant B have?

Back

4g

Front

Fill in the blank: The law of conservation of mass states that matter cannot be created nor __________.

Back

destroyed

Front

The substances listed on the left side of a chemical equation are called what?

Back

Reactants

Front

Identify the Reactants in this equation: A + B -> C.

Back

A, B

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does the law of conservation of mass state?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

Front

What is a reactant in a chemical equation?

Back

A substance that undergoes change during a chemical reaction.

Front

What is the purpose of coefficients in a chemical equation?

Back

To indicate the number of molecules or moles of a substance.