C4 Flashcards

1
Q

Acid + Metal Oxide ——>

A

Salt + Water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Acid + Metal Carbonate ——>

A

Salt + Water + Carbon Dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The reactivity series

A

K - potassium
Na- sodium
Li - lithium
Ca - calcium
Mg - magnesium
C - carbon
Zn - zinc
Fe - iron
H - hydrogen
Cu - copper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How well a metal reacts

A
  • for metals, their reactivity is determined by how easily they loose electrons
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Metal + Water ——>

A

Metal Hydroxide + Hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Formation of metal ore
Oxidation =

A

Gain of Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Extraction of metal
Reduction =

A

Loss of Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Metal higher than carbon in the reactivity series have to be extracted using…

A

..electrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a Redox Reaction ?

A

Redox reactions are reactions where both oxidation and reduction are taking place.
- electrons are transferred

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What do displacement reactions involve?

A

Displacement reactions Olle one metal kicking another one out of a compound.
Here’s the rule:
A more reactive metal will displace a less reactive metal from its compound.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is electrolysis ?

A

The process by which electric current is passed through a substance to effect a chemical change. The chemical change is one in which the substance loses or gains an electron (oxidation or reduction).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Electrolysis of aqueous solutions

A

a process in which an electrical current is passed through an aqueous (water-based) solution to cause chemical reactions. This process splits the ions in the solution into individual atoms, allowing them to gain or lose electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

During electrolysis, which electrode are the positive ions attracted to?

A

Cathode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why can’t ionic solids not undergo electrolysis?

A

The ions are in fixed positions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Do ions get reduced or oxidised at the anode?

A

Oxidised

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

During the manufacture of aluminium from bauxite, which electrode is aluminium formed at ?

A

Cathode
(Negative electrode)

17
Q

In what situation will hydrogen gas be given out during the electrolysis of an aqueous solution of an ionic solid?

A

If the metal element formed during electrolysis is more reactive than hydrogen, then hydrogen will be produced at the cathode

18
Q

In a displacement reaction, does the metal atom get reduced or oxidation?

A

Oxidation

19
Q

In terms of electrons, give the definition of oxidation.

A

Oxidation is loss of electrons, gain of oxygen or loss of hydrogen.

20
Q

In terms of electrons, give the definition of reduction.

A

Reduction is gain of electrons, loss of oxygen or gain or hydrogen.

21
Q

State the value of the Avogadro constant.

A

6.022 140 76 x 1023 mol-1