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

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

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

Some examples are granite, sand or wood.

They are also called solutions

They can cause light scattering (Tyndall effect)

Their components can be distinguished with the naked eye

Some examples are: milk, blood, or smoke

There are 118 in the Periodic Table.

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

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

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

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

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

Some examples are: saltwater, bronze or alcohol 96º

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

They are pure substances made of atoms of different elements

They cannot be separated into simpler substances.

They are made of the same type of atoms