Retake - Balancing Chemical Equations

Front

What are the substances listed on the right side of a chemical equation called?

Back

Products

Front

What is the total mass of the reactants compared to the total mass of the products at the end of a chemical reaction?

Back

The mass is the same.

Front

Which compound has the most number of oxygen atoms: 4AlPO4, 8 H2O, or 5 KOH?

Back

4AlPO4

Front

Is the equation balanced? 2H2O + O2 --> 4MgO + 3Fe

Back

No

Front

How many total atoms are represented in 4Al2O3?

Back

20

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

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

Back

It means that the number of atoms for each element is the same on both sides of the equation.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

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 or moles.