Biology: Know Thy Elements.

Front 1

Calcium

Back 1

Ca

Front 2

Carbon

Back 2

C

Front 3

Chlorine

Back 3

Cl

Front 4

Copper

Back 4

Cu

Front 5

Fluorine

Back 5

F

Front 6

Hydrogen

Back 6

H

Front 7

Iodine

Back 7

I

Front 8

Iron

Back 8

Fe

Front 9

Magnesium

Back 9

Mg

Front 10

Manganese

Back 10

Mn

Front 11

Mitrogen

Back 11

N

Front 12

Oxygen

Back 12

O

Front 13

Phosphorus

Back 13

P

Front 14

Potassium

Back 14

K

Front 15

Silicon

Back 15

Si

Front 16

Sodium

Back 16

Na

Front 17

Sulfur

Back 17

S

Front 18

Zinc

Back 18

Zn