Chapter 3

Question 1

What do Subscripts tell us in a chemical formula?

Answer 1

The number of atoms in each element in a molecule

Question 2

What do the Coefficients tell us in a chemical formula?

Answer 2

The Number of Molecules

Question 3

When balancing chemical reactions, what is the First Step?

Answer 3

Find the element that has the Fewest number of atoms in an Element

Question 4

What is the second step in balancing Chemical Reactions?

Answer 4

Change the Coefficients to have equal atoms on both sides.

Question 5

What are the Three Types of reactions?

Answer 5

Combination, Decomposition and Combustion

Question 6

What type of reaction is the following?
A+B —>C

Answer 6

Combination

Question 7

What type of reaction is the following?
C —> A+B

Answer 7

Decomposition

Question 8

What type of reaction is the following?
ABC+D= AB +CD

Answer 8

Combustion

Question 9

Combustion Reactions have more?

Answer 9

Hydrocarbons reacting with Oxygen
(Look for Carbons and Hydrogens in the Chemical reaction)