Matter is something that occupies space and possesses rest mass, especially as distinct from energy. matter can be pure substance or mixture.its solid, liquid, or a gas.
Pure substance are defined as substances that are made of only one type of atom or only one type of molecule(a group of atoms bonded together). The measure of whether a substance is pure is known as purity.Example of pure substance is aluminum foil. Two types of pure substance is compound and element.
An element is a substance consisting of atoms which all have the same number of protons - i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. A example of element is gold and silver.