Elements, Compounds and Mixtures


Elements compounds and mixtures are all unique combinations of different atoms in different ways.

The periodic table is made up of elements but these can combine with other elements to form compounds. Sometimes they are found together but they do not have a bond between them so we call them a mixture. Lets explore these meanings now looking at some examples.

Elements - An element is an atom or group of atoms that have the same number of protons. The proton remember is the sub atomic particle in the nucleus and any atoms with the same number of protons are the same element. For example if I have a group of atoms which all have 6 protons, if I look in the periodic table I would see it would be the element Carbon.

Compound - A compound is when two or more elements are bonded together. When we bond elements they swap electrons and attract to each other. This means they are connected to each other and form a compound. For example if we take carbon and react it with oxygen we get the compound carbon dioxide. This is when 2 oxygen atoms are bonded to a carbon atom.

Mixture - A mixture is when we have elements or compounds in a container or space and they are not bonded together. This means they are not joined and have not swapped or shared electrons. Instead they do not react together but mix and move around each other. An example of this is air in the classroom. This air is a mixture of oxygen, carbon dioxide and nitrogen.

Terms in section

Mixtures is a term given when different elements or compounds are in the same container or substance but are not chemically bonded


A compound is when two or more elements are joined together by a bond which forms when they share electrons or move them between each other


Elements are atoms with the same number of protons in the nucleus

Sub atomic

Sub atomic is a term used to describe parts of the atom that are the smaller than the atom itself, the proton neutron and electron


A bond is when an atom shares electrons or transfers electrons between each other meaning they are joined


Metals and Non Metals of the Periodic Table


States of Matter