Chemical Bonding

Question 1

Compound

Answer 1

substance that is made up of 2 or more different elements combined together chemically.

Question 2

Octet Rule

Answer 2

when bonding occurs, atoms tend to reach an electron arrangement with 8 electrons in the outermost energy level.

Question 3

Ion

Answer 3

charged atom or group of atoms.

Question 4

Cation

Answer 4

positively charged ion.

Question 5

Anion

Answer 5

negatively charged ion.

Question 6

Ionic bond

Answer 6

force of attraction between completely charged ions in a compound. Ionic bonds are always formed by the complete transfer of electrons from one atom to another.

Question 7

Molecule

Answer 7

group of atoms joined together, smallest particle of an element that can exist independently.

Question 8

Valency

Answer 8

number of atoms of hydrogen/any other monovalent element with which each atom of the element combines.

Question 9

Electronegativity

Answer 9

relative attraction that an atom in a molecule has for the shared pair of electrons in a covalent bond.

Question 10

Polar covalent bond

Answer 10

unequal sharing of the pair of electrons.

Question 11

Sigma

Answer 11

formed from head-on overlap of orbitals, stronger than pi

Question 12

Pi

Answer 12

formed from side-ways overlap of orbitals

Question 13

Bond energy

Answer 13

average amount of energy stored in a mole of a bond of a particular type in a chemical species into separate atoms.

Question 14

Intramolecular

Answer 14

forces between atoms in molecules

Question 15

Intermolecular

Answer 15

forces between molecules.