1. Chemical Compounds in Cells
Element- any substance that can’t be broken down into simpler substances.
- Ex: oxygen and nitrogen
Compound- When two or more elements combine chemically, they form a compound.
- Ex: water and carbon dioxide

2. Chemical Compounds in Cells
Water-
a) Made up of 2 hydrogen and 1 oxygen atoms
b) Dissolves chemicals that cells need
c) Most chemical reactions in cells could not take place withOUT water.
d) Helps cells keep their size and shape.
e) Helps maintain a stable temperature (water temp changes slower than air temp)

3. Chemical Compounds in Cells
Organic compounds- contain carbon
Inorganic compounds- do not contain carbon
- Ex: water and salt

4. Components
Function
Examples in the Body
Sources in the Diet
Carbohydrates
Proteins
Lipids
Nucleic Acids