Unit 3

Question 1

Oxidation

Answer 1

Loss of electrons OR oxidation state becoming more positive

Question 2

Standard Electrode Potential (E delta)

Answer 2

The potential difference when any half-cell is connected to the standard hydrogen electrode under standard conditions

Question 3

Amphoteric

Answer 3

A substance that can react with both acids and bases

Question 4

Inert Pair

Answer 4

ns2 pair of electrons not involved in bonding

Question 5

Co-ordinate Bond

Answer 5

Shared pairs of electrons both from the same atom

Question 6

Dimer

Answer 6

A species created when two molecules join together

Question 7

Electron-deficient

Answer 7

A species with fewer that 8 electrons in it outer shell, thus this shell is not full

Question 8

Lone Pair

Answer 8

Pair of electrons in an outer shell that are not involved in bonding

Question 9

Isoelectronic

Answer 9

Same number of electrons in the outer shell

Question 10

Acidic Oxide

Answer 10

Oxide that reacts with bases

Question 11

Basic Oxide

Answer 11

Oxide that reacts with acids

Question 12

Disproportionation

Answer 12

A reaction where atoms of the same element become oxidise-=][ and reduced to form two different products

Question 13

Reduction

Answer 13

Gain of electrons OR oxidation state becoming negative