1. Atoms are the smallest pieces of matter.
Everything is made of atoms.
This famous photo was taken of individual
atoms moved into place to write IBM’s name
2. More than one atom bonded together
O2
Br2
Image: Mstroeck
3. The most basic type of chemical substance
The Periodic Table of the Elements
is a list of all the elements
If it’s on the periodic table, it’s an element!
4. More than one element bonded together
◦ Carbon dioxide (CO2)
◦ Water (H2O)
Carbon dioxide – CO2
Image: GarciaGerry
Water – H2O
Image: Jecowa
5. More than one kind of
substance mixed
together
They are NOT bonded
together
Author: howdoyouturnthison
◦ Air (Oxygen, Nitrogen,
Carbon dioxide))
◦ Seawater (Sodium
Chloride and H2O)
