Life+Molecules

=Life Molecules=

A.) The four common chemical elements on our earth. - C.H.O.N (Carbon, Hydrogen, Oxygen, Nitrogen)

B.) Bonding:

- Ionic -Giving and taking of electrons. (Ex. Sodium Chloride) - Covalent - Sharing of the electrons.

C.) Radioactive Isotopes:

- Equal number of protons but a different number of neutrons. (Ex. Carbon 14) - Used to date fossils, determine time of death, and diagnosis diseases.

D.) Chemical Reactions:

- Occur anytime that a bond is being formed or being broken. - Go [|here] to check out a simulated chemical reaction.

E.) Structural Formula

- Shows the arrangement of the different elements in the body. (Ex. O:C:O)