Chemistry of Life

Because they help explain how biological molecules interact and function

Because chemistry is unrelated to biology

Because only chemists need to know about these concepts

Because these concepts are only important in physics

Cell

Atom

Organ

Tissue

Carbon

Hydrogen

Helium

Sulfur

It has a charge which makes it "sticky"

It has no separation of charge.

It does not dissolve in water.

It is always a gas.

Water is made of two hydrogen atoms and one oxygen atom.

Water is a polar molecule.

Water does not dissolve in water.

Water is critical for life’s processes.

Covalent bond

Ionic bond

Hydrogen bond

Metallic bond

Have an affinity for water

Usually dissolve easily in water

Usually nonpolar

Example: salt and sugar

clear

a leaf

hydrophobic

hydrophilic

A

B

neither

both

A

B

neither

both