Balancing Chemical Equations

Front

What is the left part of a chemical equation called?

Back

Reactants

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

Balance the following equation: ___ SeCl6 + ___ O2 → ___ SeO2 + ___ Cl2

Back

1, 1, 1, 3

Front

Is the following equation balanced? 2C2H2 + 5O2 → 4CO2 + 2H2O

Back

Yes

Front

Balance the following equation: ___ Mg + ___ O2 → ___ MgO

Back

2, 1, 2

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the Law of Conservation of Mass is obeyed.

Front

What does it mean to balance an equation?

Back

To adjust the coefficients in front of the reactants and products so that the number of atoms of each element is the same on both sides.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved.