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1. HETEROGENEOUS MIXTURES
2. HOMOGENEOUS MIXTURES
3. COLLOIDS
4. COMPOUNDS
5. ELEMENTS or SIMPLE SUBSTANCES

Some examples are iron (Fe), hydrogen (H2) or carbon (C)

Some examples are: milk, blood, or smoke

They cannot be separated into simpler substances.

Their components cannot be distinguished with the naked eye but with a microscope

There are 118 in the Periodic Table.

Some expamples are: water (H2O). glucose (C6H12O6) or salt (NaCl)

Their components cannot be distinguished with the naked eye neither with a microscope

They are also called solutions

Some examples are: saltwater, bronze or alcohol 96º

Some examples are granite, sand or wood.

They are pure substances made of atoms of different elements

Their components can be distinguished with the naked eye

There are two phases: a dispersed phase and a dispersion medium

They can be separated into simpler substances by chemical methods, such as electrolysis or thermal decomposition

They can cause light scattering (Tyndall effect)

They are made of the same type of atoms

Their properties and composition vary from one part to another of the same sample

Their properties and composition are the same in any part of the sample.