9. Balancing Equations

Front

What is the balanced equation for the reaction of antimony trisulfide with oxygen?

Back

Sb₂S₃ + 3O₂ → 2Sb + 3SO₂

Front

How many hydrogen atoms are in 3(NH₄)₂CrO₄?

Back

24

Front

What term describes an element that exists in pairs?

Back

Diatomic

Front

In the equation 2Mg + O₂ → 2MgO, what are the reactants?

Back

Mg and O₂

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does it mean for a chemical equation to be balanced?

Back

It has the same number of each type of atom on both sides of the equation.