Electrolysis

Question 1

Electrolysis

Answer 1

Chemical decomposition by passing an electrical current through a liquid or solution containing ions

Question 2

Elecctrolyte

Answer 2

A liquid or geel that can be decomposed by electrolysis

Question 3

Electrode

Answer 3

A conductor through which electricity leaves or enters

Question 4

Oxidation

Answer 4

The loss of electrons

Question 5

Reduction

Answer 5

The gain of electrons

Question 6

Oxidising agent

Answer 6

A substance causing oxidation

Question 7

Reducing agent

Answer 7

A substance causing reduction

Question 8

Electrolysis of water :

Answer 8

• Hydrogen to cathode (negative) and double the amount as oxygen
• Oxygen to anode (positive)
• Test for H is Pop test
• Test for O is relighting a glowing splint

Question 9

Red cat

An Ox

Answer 9

• Reduction at Cathode

- Anode is where Oxidation occurs

Question 10

Which species will go to the anode and cathode?

Answer 10

• Positive ions go to cathode

- negative ions to anode

Question 11

Anode

Answer 11

• The species closest to 0.00 volts will be oxidised
• Water will be preferentially oxidised as to polyatomic ions
• Negative ions are oxidised (negative Volt values)

Question 12

Cathode

Answer 12

• The species closest to 0.00 Volts will be reduced
• Water will be preferentially reduced as to polyatomic ions
• Positive ions are reduces (positive Volt values)

Question 13

Observation

Answer 13

• talk about what relatively forms at the anode or cathode (eg. Metal forming)

Question 14

Identity

Answer 14

• talk about what exactly forms at the cathode or anode (eg. Zinc)

Question 15

Hydrocarbons

Answer 15

• compounds that contain only carbon and hydrogen

Question 16

Homologues series

Answer 16

a series or similar compounds with the same functional group - differing only in chain length

Question 17

Functional group

Answer 17

an atom of group of atoms that form the centre of chemical activity in a molecule

Question 18

Saturated compund

Answer 18

a compound in which all bonds are single bonds

Question 19

Unsaturated compound

Answer 19

a compound in which there is at least 1 or 2 double or triple bonds

Question 20

carbon bonds

Answer 20

strong covalent bonds that can form single, triple or double bonds
- carbon the basic building block or all organic compounds that recycle through the earth’s air, water, soil and living organims

Question 21

Naming, single bond

Answer 21

• Alkane group
• ## Number of carbons will name the prefix of the ane

Question 22

Prefix names

Answer 22

1 = meth-
2 = eth-
3 = prop-
4 = but-
5 = pent-
6 = hex
7 = hept-
8 = oct-
9 = dec-
10 = dodec-

Question 23

naming, double bond

Answer 23

• Alkene

- number of carbons will name the prefix of ene

Question 24

naming, triple bond

Answer 24

• Alkyne

- number of carbons will name the prefix or yne

Question 25

alcohols

Answer 25

• hydroxyl group

- carbon bonded to hydroxide

Question 26

Haloalkanes (halogenoalkanes)

Answer 26

• where x is F, Cl, Br, I

Question 27

Carboxylic acids

Answer 27

• carboxyl group

- carbon which is bonded to a hydroxide molecule and double bonded to oxygen