1. Elements, atoms, molecules, mixtures

2. Periodic Table 118 elements
Metals on the left, non-metals on the right

3. Element a pure chemical substance with unique properties
made from a single type of atom
Arranged by atomic number on the periodic table

4. Atom
The smallest, indivisible particle that makes up all matter

5. Atoms
Molecules

6. Molecule
Two or more atoms that are chemically bonded together to create a new substance
Water molecule:
H2O
2 hydrogen atoms
1 oxygen atom

7. C C
Carbon dioxide

8. Molecules Name Formula Amount of each atom Eg. Water H2O 2 hydrogen
1 oxygen
Salt
NaCl
1 sodium
1 chloride
Caffeine
C8N4H10O2
8 carbon
4 nitrogen
10 hydrogen
2 oxygen
Glucose
C6H12O6
6 carbon
12 hydrogen
6 oxygen
Carbon dioxide
CO2
1 carbon
Acetone
C3H6O
3 carbon
6 hydrogen

9. Mixture

10. Mixture
Made from two or more different molecules that are mixed together
The particles are not chemically combined to each other and can be separated