Balancing Chemical Equations

Front

What is a chemical reaction?

Back

The process in which substances undergo chemical changes that result in the formation of new substances.

Front

How many atoms of carbon (C) are in C6H12O6?

Back

6

Front

Balance this equation: H2 + Cl2 ---> ?

Back

H2 + Cl2 ---> 2HCl

Front

Is the equation H2 + Cl2 ---> HCl balanced?

Back

No

Front

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

Back

2

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a reactant?

Back

A substance that enters into a chemical reaction.

Front

What is a product?

Back

A substance formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is the coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.