Balancing Chemical Equations (Q2W6)

Front

What is the left part of a chemical equation called?

Back

Reactants

Front

Balance this equation: HgO ---> ?

Back

2HgO ---> 2Hg + O2

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: ___ H2 + ___ O2 → ___ H2O

Back

2, 1, 2

Front

How many HCl molecules do you need to balance this equation? Mg + __ HCl ---> MgCl2 + H2

Back

2

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

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 does it mean to balance an equation?

Back

Adjusting coefficients to ensure the same number of each type of atom on both sides.

Front

What is a coefficient in a chemical equation?

Back

A number placed before a compound to indicate how many molecules are involved.