The Reactivity Series

Question 0

Reactivity series

Answer 0

Potassium 
Sodium 
Lithium 
Calcium 
Magnesium 
Aluminium 
Zinc 
Iron
Lead 
Copper 
Silver 
Gold 
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Question 1

Copper silver and gold

Answer 1

Most reactive- copper
Silver
Least reactive- gold

Question 2

Metal and oxygen

Answer 2

Metal oxide

Question 3

Metal and steam

Answer 3

Metal hydroxide

Question 4

Metal and water

Answer 4

Metal oxide and hydrogen

Question 5

Metal and acid

Answer 5

A salt and hydrogen

Question 6

Smelting

Answer 6

Extracting metal from their mineral ores

Question 7

Hydrogen in the reactivity series

Answer 7

Iron and copper

Question 8

Carbon in the reactivity series

Answer 8

Aluminium and zinc

Question 9

Manganese in the reactivity series

Answer 9

Between aluminium and zinc (under carbon)

Question 10

Extracting metals from oxides

Answer 10

Less reactive then carbon- can be displaced

Question 11

Which substances are extracted with electrolysis

Answer 11

Potassium 
Calcium
Magnesium 
Aluminium 
Sodium

Question 12

Electrolysis process

Answer 12

Negative chloride attracts to the anode and the carbon attracts to the cathode

Question 13

What’s happens at the anode

Answer 13

The chloride reduces at the cathode and gains an electron
The carbon oxidises at the anode and loses an electron
A current is created though the electrodes

Question 14

Properties of iron

Answer 14

Moderately reactive 
Plentiful 
Easily reduced
Strong as an alloy 
Brittle when pure

Question 15

What is put into the blast furnace

Answer 15

Solid raw materials
Coke
Iron ore
Limestone

Question 16

What comes out of the blast furnace

Answer 16

Pure iron and slag

Question 18

Top reaction in blast furnace

Answer 18

Fe2O3 + CO –> Fe + CO2

1000 degrees

Question 19

Middle reaction in blast furnace

Answer 19

CO2 + C –> 2CO

1500 degrees

Question 19

Uses of slag

Answer 19

Tarring roads

Question 20

Bottom reaction in the blast furnace

Answer 20

C + O2 –> CO2

2000 degrees

Question 21

Which reactions in the blast furnace are REDOX reactions

Answer 21

Top and middle

Question 22

Reaction at the negative electrode

Answer 22

Al^3+ + 3e^- –> Al

Question 23

Reaction at the positive electrode

Answer 23

2O^2- –> O2 + 4e^-

Question 24

Carbon dioxide produced at positive with graphite

Answer 24

C(s) + O2 –> CO2

Question 25

Tests for cations (flame)

Answer 25

Dip platinum or nichrome wire into hydrochloric acid
Put this is flame to clean
Dip wire into new hydrochloric acid and then the solid of Li, K, Ca or Na

Question 26

Test for cations (sodium hydroxide and ammonium)

Answer 26

For NH4
Add sodium hydroxide and warm
If ammonium anions are produced them pungent gas produced and damp red litmus paper turns blue

Question 27

Test for cations (sodium hydroxide)

Answer 27

Copper forms a blue precipitate
Iron (II) forms a green precipitate
Iron (III) forms a brown precipitate

Question 28

Tests for anions (nitric/silver)

Answer 28

Add dilute nitric acid and silver nitrate solution
Cl white precipitate
Br cream precipitate
Iodide yellow precipitate

Question 29

Tests for anions (barium)

Answer 29

Add dilute hydrochloric acid and barium chloride to SO4^2-

White precipitate forms

Question 30

Tests for anions (CO2)

Answer 30

Add aqueous solution of solid and dilute hydrochloric/nitric acid to CO3^2-
Turns limewater cloudy and produces gas bubbles

Question 31

Test for hydrogen

Answer 31

Squeaky pop

Question 32

Test for oxygen

Answer 32

Relights a glowing splint

Question 33

Test for CO2

Answer 33

Bubble through limewater

Limewater turns cloudy

Question 34

Test for ammonia

Answer 34

Heat ammonium chloride and sodium hydroxide and litmus paper with turn blue, UI will turn purple

Question 35

Test for chloride

Answer 35

Damp litmus paper- white

Moist starch iodide paper- blue