Balancing Chemical Equations

Question 1

Atoms are not destroyed or created during a chemical reaction.

Answer 1

There must be the same number of atoms on each side of the chemical equation.

Question 2

What are coefficients in a chemical equation?

Answer 2

the relative amounts of each substance present. (the big numbers)

Question 3

What are subscripts in a chemical equation?

Answer 3

Subscripts are numbers that come after a symbol and below. Subscripts tell you the number of atoms of that element. If an element does not have a subscript, then it is understood that the subscript is 1. (the small number)

Question 4

To balance the chemical equation, you must add coefficients in front of the chemical formulas in the equation

Answer 4

You cannot add or subtract subscripts

Question 5

What is the structure of a chemical equation?

Answer 5

1. Reactants
2. Arrow(chemical reaction
3. product

Question 6

What are reactants?

Answer 6

Elements or compounds which exist prior to a chemical reaction(written before the arrow in the equation)

Question 7

What are products?

Answer 7

New substances that are created by the rearranging of atoms after a chemical reaction(written after the arrow in the equation)

Question 8

How are new substances that are created by the rearranging of atoms after the chemical reaction(written after the arrow)?

Answer 8

By rearranging the atoms.

Question 9

What is the difference between an atom and a molecule?

Answer 9

Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.

Question 10

CO2 + CO2 =

Answer 10

2CO2