1. Matter can be classified into different categories.
Classifying Matter
Matter is anything that has a volume (takes up space) and has a mass.
Therefore all chemicals are matter!
Matter can be classified into different categories.
MATTER
PURE SUBSTANCE MIXTURE
ELEMENT COMPOUND SOLUTION MECHANICAL MIXTURE
SUSPENSION

2. Pure Substances
Pure substances are the “building blocks” of matter. There are two different categories of pure substances:
1) Element
- The simplest “building blocks” of matter.
- Elements cannot be broken down into simpler parts.
- All known elements are listed on the Periodic Table of Elements.

3. 2) Compounds
- Compounds are pure substances that are made up of 2 or more different elements
- Compounds cannot be decomposed
- The number and type of atoms determines the type of compound.
Hydrogen peroxide
Water molecule

4. Mixtures
Mixtures are made of 2 or more pure substances. There are two different categories of mixtures.
1) Solutions
- These mixtures are homogeneous. They have a uniform appearance throughout
- solid solution  steel liquid solution  orange soda

5. 2) Mechanical Mixture
- These mixture are heterogeneous. They have a non- uniform appearance and are easily separated using simple mechanical means.

6. 3) Suspension
- Where tiny particles of one substance are held within another to create a cloudy mixture
- Where particles can be separated out when the mixture is poured through filter paper
Examples:
Tomato juice
Salad vinaigrettes

7. 4) Colliod
- is a solution that has particles, yet are still able to remain evenly distributed throughout the solution. 
-  the substances remain dispersed and do not settle to the bottom of the container.
An easy way of determining whether a mixture is colloidal or not is through use of the Tyndall Effect. When light is shined through a true solution, the light passes cleanly through the solution, however when light is passed through a colloidal solution, the substance in the dispersed phases scatters the light in all directions, making it readily seen. An example of this is shining a flashlight into fog. The beam of light can be easily seen because the fog is a colloid.
Water
Milk