C1 Topic 3&4

Question 0

Carbonate + Acid –>

Answer 0

Salt + H2O + CO2

Question 1

Base + Acid –>

Answer 1

Salt + H2O

Question 2

Metal + Acid –>

Answer 2

Salt + Hydrogen

Question 3

3 types of acids as symbols

Answer 3

• HCl
• HNO3
• HSO4

Question 4

Why does the stomach produce HCl?

Answer 4

To help with digestion - the enzymes work best in acidic environments
Also kills bacteria - no food poisoning

Question 5

What is indigestion and how is it dealt with?

Answer 5

Too much HCl in the stomach

Indigestion tablets contain bases to neutralise the acid such as Calcium Carbonate

Question 6

Metal oxides and Hydroxides produce what when reacted with acid and why?

Answer 6

Salt and H2O because they’re bases and the acid neutralises it

Question 7

Symbol for
Calcium Oxide
Sodium Oxide
Potassium Oxide

Answer 7

CaO
NaO
KO

Question 8

Symbol for
Magnesium Hydroxide
Lithium Hydroxide
Iron Hydroxide
Potassium Hydroxide

Answer 8

Mg(OH)2
LiOH
Fe(OH)2
KOH

Question 9

State of most metal oxides

Answer 9

Solid

Question 10

State of most Hydroxides

Answer 10

Aqueous

Question 11

Test for chlorine

Answer 11

Turns DAMP blue litmus paper red then bleaches it white

Question 12

Test for hydrogen

Answer 12

Squeaky pop lit splint in test tube

Question 13

Test for CO2

Answer 13

Turns limewater cloudy

Question 14

Test for Oxygen

Answer 14

Re-lights glowing splint

Question 15

Electrolysis of table salt produces…

Answer 15

Chlorine

Question 16

Three uses of chlorine…

Answer 16

Manufacture of bleach
Make poly(chlorethene) aka PVC
Treat water supplies

Question 17

Electrolysis of water produces

Answer 17

Hydrogen and Oxygen

Question 18

The positive rod in electrolysis is called

Answer 18

ANODE

Question 19

Negative rod in electrolysis is called

Answer 19

Cathode

Question 20

Cations - Anions

Answer 20

Positive - Negative

Question 21

What are most metals found as

Answer 21

Ores

Question 22

Pure metals when dug up

Answer 22

Gold is not reactive so it is by itself when you dig it up

Question 23

Where are ores found

Answer 23

In the earths crust

Question 24

What is an ore

Answer 24

A natural compound containing enough metal to make it worthwhile extracting

Question 25

Reactivity series

Answer 25

``` Potassium Sodium Calcium Magnesium Aluminium Zinc Iron Tin Lead Copper Silver Gold Platinum ```

Question 26

Metals in the reactivity series that have to be extracted by electrolysis

Answer 26

``` Potassium Sodium Calcium Magnesium Aluminium ```

Question 27

Metals that can be extracted by heating with carbon

Answer 27

Zinc Iron Tin Lead

Question 28

Oxidisation

Answer 28

Gain of oxygen | Formation of metal ores

Question 29

Reduction

Answer 29

Loss of oxygen | Extraction of metal

Question 30

Oxidisation of magnesium

Answer 30

2Mg + O2 --> 2MgO

Question 31

Reduction of Copper

Answer 31

2CuO + C --> 2Cu + CO2

Question 32

Haematite

Answer 32

Iron ore

Question 33

Bauxite

Answer 33

Aluminium ore

Question 34

Cinnabar

Answer 34

Mercury ore

Question 35

Galena

Answer 35

Lead ore

Question 36

Malachite

Answer 36

Copper ore

Question 37

Nitinol is an alloy of

Answer 37

Nickel and Titanium