Some examples are: saltwater, bronze or alcohol 96º
Some examples are: milk, blood, or smoke
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 but with a microscope
Their components can be distinguished with the naked eye
They are pure substances made of atoms of different elements
Some examples are iron (Fe), hydrogen (H2) or carbon (C)
They are made of the same type of atoms
There are 118 in the Periodic Table.
Some examples are granite, sand or wood.
Their properties and composition vary from one part to another of the same sample
They are also called solutions
Their components cannot be distinguished with the naked eye neither with a microscope
Some expamples are: water (H2O). glucose (C6H12O6) or salt (NaCl)
Their properties and composition are the same in any part of the sample.
They cannot be separated into simpler substances.