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Elements, Compounds and Mixtures

What is an Element?

An element is a substance made from only one type of atom.
Remember this definition as you might need it in the exam!

For example
Carbon is made entirely from carbon atoms.
Sodium is made entirely from sodium atoms.

Unlike a compound, an element cannot be broken down
(chemically) into a more simple substance.

The periodic table shows all the elements. Atoms of
the same element have the same number of protons
and therefore have the same atomic number.

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