Balancing Equations

Front

What are the two sides of a chemical equation called?

Back

Reactants (left) and Products (right)

Front

Balance the equation: _CH₄ + _O₂ --> _CO₂ + _H₂O

Back

1,2,1,2

Front

Which of the following equations is balanced? PbO₂ + 2H₂, SO₂ + H₂O --> H₂SO₄, 2Na + 2H₂O --> 2NaOH + H₂

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

What type of reaction is represented by the equation: 2 H₂O₂ --> 2H₂O + O₂?

Back

Decomposition

Front

How many atoms are there TOTAL in H₂SO₄?

Back

7

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What are coefficients in a chemical equation?

Back

Numbers placed before compounds to indicate the number of molecules involved in the reaction.

Front

What is a reactant?

Back

A substance that undergoes change during a chemical reaction.