Atoms Bonding

Compounds, Mixture, Chemical Change

• Learning Objective:- Describe the difference between compounds and mixtures.
• What is a element?
• An Element contains only one kind of atom.
• What is a compound?
• A Compound is made of atoms of different elements, bonded together.
• What is a mixture?
• A Mixture contains different substances that are not bonded together.

Why Do Atoms Form Bonds?

• Atoms form bonds because the atoms have very stable arrangenment of electronsof elctrons in the outer shell, this makes the noble gases unreactive.
• Atoms bond with each other in order to gain stable arrangement of outer-shell electrons.
• An ion is a charged particle. it is charged because it has an unequal number of protons and electrons.

The Ionic Bond

• The Ionic bond is the bond that forms between ions of opposite charge.
• A metal reacts with a non-metal to form an ionic compound. The metal atoms lose electrons. The non-metal atoms gain them, the ions form a lattice. The compound has no overall charge.
• When metals bond with non-metals, the metals transfer electrons and become positive charged ions. Non -metals receive electrons and become negative charged ions. This type of bonding us called ionic bonding. The ions are held together by strong electrostatic forces of attraction, which act in all directions.

More about ions