Unit 2-Area of Study 1

Question 1

Define:

Base

Answer 1

Proton acceptor

Question 2

Define:

Conjugate Base

Answer 2

Proton acceptor; 1 less hydrogen than acid

Question 3

Define:

Amphiprotic Substance

Answer 3

Substance that can either accept or donate a proton

Question 4

Define:

Strong Acid

Answer 4

Acid which fully ionises in water

Question 5

Define:

Weak Acid

Answer 5

Acid which partially ionises in water and is reversible

Question 6

Define:

Strong Base

Answer 6

Base which easily accepts protons

Question 7

Define:

Weak Base

Answer 7

Base which does not easily accept protons

Question 8

Define:

Polyprotic Acid

Answer 8

Acid capable of donating more than one proton

Question 9

Define:

Acid

Answer 9

Proton donor

Question 10

Define:

pH

Answer 10

pH = -log[H+]

Question 11

Define:

Oxidation

Answer 11

Oxidation is Loss of electrons

Question 12

Define:

Reduction

Answer 12

Reduction is Gain of electrons

Question 13

Define:

Oxidant

Answer 13

Substance which causes another substance to be oxidised

Question 14

Define:

Reductant

Answer 14

Substance which causes another substance to be reduced

Question 15

What are the 4 steps which must be taken in order to balance redox half equations?

Answer 15

1) balance any oxygen atoms with water molecules
2) balance any hydrogen atoms with hydrogen ions
3) balance charge by adding electrons to the more positive side
4) balance electrons to combine equations and cancel if necessary

Question 16

Define:

Anode

Answer 16

Electrode where oxidation occurs

Oxidation at the Anode; Anne the Ox

Question 17

Define:

Cathode

Answer 17

Electrode where reduction occurs

Reduction at the Cathode; Red Cat