Particulate View of WaterBell Ringer : Please respond on your sheet!

Atoms

• All matter is composed of atoms. Atoms are often called the building blocks at matter

Element

• Matter that is made up of only one kind of atom

Is water an element?

No, water contains two different elements – hydrogen and

oxygen

Compound

• A substance is composed of the atoms of two or more different elements joined together chemically

• Scientists have identified more than 24 million compounds

******SO IS WATER A COMPOUND?

• Water = H20

• Table Salt = NaCl

• Ammonia = NH3

• Baking Soda = NaHCO3

• Chalk = CaCO3

• Octane = C8H18

*** Are these elements or compounds?

Molecule

• The smallest unit of a compound that retains the properties of a substance

VS.

Atoms

H

Molecules

H2

(Diatomic)

Atoms

O

Molecules

H20

***MAKE SURE YOU COLOR CODE YOUR ATOMS – USE MARKERS AT TABLE

Atoms

N

Molecules

NH3

***MAKE SURE YOU COLOR CODE YOUR ATOMS – USE MARKERS AT TABLE

Molecules in Motion…

• Watch the awesome video about molecules in motion!

http://www.teachertube.com/viewVideo.php?video_id=536&title=Molecules_in_Motion