1. Compounds and Molecules

2. Atoms are seldom found alone in nature.

3. They like to connect with other atoms.

4. Each element is able to make a specific number of connections with other elements. These connections are an element’s combining capacity.

5. How Elements Combine:
Rule #1: Often metals combine with nonmetals

6. How Elements Combine:
Rule #2: Write the name of the metal first and the name of the nonmetal second.
Ex. Combining Sodium and Chlorine
Sodium…….Chlorine

7. How Elements Combine:
Rule #3: Change the ending of the nonmetal to “ide”
Ex.
Sodium chloride

8. How Elements Combine:
Rule #4: Each atom has its own combining capacity (# of connections)
Ex.
Sodium has 1 connection
Chlorine has 1 connection

9. How Elements Combine:
Rule #5: Atoms combine so that each fills its combining capacity