
A study of matter, its properties (how it
reacts, how it’s made up) and its changes and
transformations.

Is anything that has mass and takes up space.

PURE SUBSTANCE:
◦ Is made up of one type of particle
◦ Has a unique set of
characteristics or properties
◦ Cannot be physically separated
into different substances
◦ Example: water (H2O)
◦ 2 Categories:
 Elements
 Compounds
Elements
Compounds
Cannot be broken into
simpler substances.
Contains only one type
of atom.

Ex: Hydrogen
Carbon
Contains two or more
elements in a fixed
proportion. Identified by
chemical formulas.

Ex: Water (H20)
Carbon Dioxide (CO2)

Elements from the
Periodic Table
◦
◦
◦
◦
◦
Gold
Copper
Helium
Hydrogen
Oxygen



Is two or more pure
substances combined
together
Can be physically
separated
Each substance keeps
its properties, but it
may be difficult to
identify them



Salad
Steel
Toothpaste

Ham and Cheese
Sandwich

Homogenous: Can NOT
see the different parts.
Ex: saltwater
pop
Homogenous

Heterogenous: Can see
the different parts.
Ex: oil and water
salt and pepper
Heterogenous


You can see the
different substances
that make up the
mixture
Heterogeneous mixture

Examples:
◦ Soil
◦ Chocolate Chip Cookies


Looks as if it is all one
substance
Homogeneous mixture

Examples:
◦ Vinegar
◦ Glass

The components are in
different states.

Examples:
◦ Mud (dirt and water)
◦ Blood

The suspended
substance cannot be
easily separated from
the other substance.

Examples:
◦ Milk
◦ Cornstarch and water
◦ Fog
Classification of Matter
All matter
Pure substances
Mixtures
- Contains two or more
pure substances
- contain only one type of
particle
- can exist in three states of
matter: solid, liquid and gas
Suspension
Colloid
Elements
Compounds
Mechanical
Mixture
Suspension
Solution
The End