Chemical Bonding and their properties Ionic Bonding and their properties Covalent Bonding and their proerties Metallic Bonding and their properties

1. Chemical Bonding
BY TABASSUM ISHRA

2. Chemical Bonding
Chemicals bonds are forces that hold the
matter together. There are 3 types chemical
bonds:
1. Ionic Bonding
2. Covalent bonding
3. Metallic bonding

3. Ionic Bonding
 Ionic bond is formed by the attraction between
oppositely charged ions. Ionic bonds a formed
between metals and non-metals.
 When non-metals react with metals they gain
one or more electrons. The metals give out
their electrons so they stick together in a ionic
compound.
 Ionic bonds stack up in a pattern called crystal
lattice.

5. Ionic Bonding Properties
 At room temperature they are high melting point solids.
 Brittle and hard.
 Do not conduct electricity as solids but do conduct dissolved or melted in
water.
 They dissolve well in water.
 Formed between oppositely charged ions and metals and non-metals.

6. Covalent Bonding
 Covalent bonding are formed between non-metals.
 If no metals are present to give out their electrons, than the non-metals
share their valence electrons with each other.
 Intramolecular forces are inside the molecules and holds the atoms
together to make the molecule.
 Intermolecular forces are attractions between molecules.

8. Covalent Bonding Properties
 Have low melting and boiling points
 At room temperature, covalent substances are gases, liquid or low melting
point solids.
 Do not conduct electricity.
 Soft.
 Don’t dissolve in water.

9. Metallic Bonding
 Metallic bonds are formed between multiple metal atoms.
 Are formed by the mutual attraction for each others loosely held electrons.
 Most metal atoms have 1 or 2 valence electrons which are not tightly
bounded to the ams.
 In a piece of metal these valence electrons do not seem to belong to any
of the atoms but are able to move freely through the structure from one
atom to another.
 The metal ions line up in a repeating pattern and the loose electrons act as
a electron glue.

10. Sea of Electrons
Metallic Bonding

11. Metallic Bonding Properties
 High melting points.
 Good conductors heat and electricity.
 Malleable.
 Ductile.
 Lustrous.
 Solids at room temperature.