Chemical Bonding, Valence Bond Theory, Molecular Orbital Theory, Hybridisation

Question 1

Chemical bonding

Answer 1

A force that holds the atoms of various elements together

Question 2

Valence shell

Answer 2

The outer most shell of an atom

Question 3

Valence electron

Answer 3

The electrons which occupy the valence shell

Question 4

Inert

Answer 4

A substance that is not chemically reactive (don’t form compounds with other elements)

Question 5

Octet rule

Answer 5

When bonding occurs atoms tend to reach an electron arrangement of 8 electrons in the outer shell by losing, going or sharing of electrons

Question 6

Covalent bond

Answer 6

Formed by the sharing of pairs of electrons, represented by a solid line

Question 7

Heteroatomic molecules

Answer 7

Molecules which are made up of atoms of different elements, bonding pairs of electrons are shared unequally by the atoms

Question 8

Single covalent bond

Answer 8

Bond that shares 1 pair of electrons

Question 9

Double covalent bond

Answer 9

Bond that shares 2 pairs of electrons

Question 10

Triple covalent bond

Answer 10

Bond that shares 3 pairs of electrons

Question 11

Dative bond (coordinate bond)

Answer 11

Type of covalent bond formed when one atom donates it’s electron pair to another atom

Question 12

Bond length

Answer 12

The equilibrium distance between the centres of two bonded atoms

Question 13

Bond angle

Answer 13

The equilibrium angle between the lines that join two atoms to a third atom