Elements, Compounds & Mixtures

Before we talk about the different types of chemical bonds, we will need to distinguish elements, compounds and mixtures from one another.

Compound is formed when two or more different types of elements are chemically combined together.

Difference between element and compound

Simplest form of matterConsists of two or more different types of elements chemically combined together
1 type of atom2 or more types of atoms
Cannot be decomposed into simpler substance by chemical meansCan be decomposed into simpler substance by chemical means

Mixture is formed by physically mixing two or more substances together. (No chemical reaction is involved)

  • Element + element mixture
  • Element + compound mixture
  • Compound + compound mixture


Difference between mixture and compound

Constituents present in fixed proportionsConstituents present in various proportions
Formed by chemical reactionNot formed by chemical reaction
Have properties different from properties of constituentsHave properties same as properties of constituents
Constituents are separated by chemical meansConstituents are separated by physical means


Recall that elements are divided into metal and non-metal. When two or more metals are mixed together, an alloy is formed. The common reason for mixing metals together is that their mixture is harder and stronger than their base metals.

The table below shows the difference between metal and non-metal.

Melting point/Boiling pointHighLow
ConductivityGood conductor of heat and electricityBad conductor of heat and electricity


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