C4

Question 1

What is oxidation?

Answer 1

A reaction in which oxygen is added and electrons are lost

Question 2

What is reduction?

Answer 2

A reaction in which oxygen is removed and electrons are gained

Question 3

Metals + Oxygen –> ?

Answer 3

Metal oxides

Question 4

What does copper metal with oxygen make?

Answer 4

Black copper oxide

Question 5

Example of reduction reaction?

Answer 5

ZnO + C –> Zn + CO

Question 6

What is a REDOX reaction?

Answer 6

A reaction where oxygen is gained or lost

Question 7

Physical properties of metals?

Answer 7

• High melting and boiling point
• Good conductors of electricity and heat
• Malleable and ductile

Question 8

Why do metals have high melting and boiling points?

Answer 8

Many strong metallic bonds mean large amounts of heat energy are needed to overcome forces and break bonds

Question 9

Why are metals good conductors of electricity and heat?

Answer 9

Free electrons can carry charge

Question 10

Why are metals malleable and ductile?

Answer 10

Layers of positive ions can easily slide over one another

Question 11

Order of elements from most to least reactive?

Answer 11

• Potassium
• Sodium
• Lithium
• Calcium
• Magnesium
• Aluminium
• CARBON
• Zinc
• Iron
• HYDROGEN
• Copper
• Silver
• Gold

Question 12

Mnemonic to remember reactivity series?

Answer 12

People Send Loads of Cows, Magpies, And, CUTE Zebras Into HERE. Can She Go?

Question 13

Metal + Cold Water –> ?

Answer 13

Metal hydroxide + Hydrogen gas

Question 14

Metal + Steam –> ?

Answer 14

Metal oxide + Hydrogen gas

Question 15

Acids + Metals –> ?

Answer 15

Salt + Hydrogen Gas

Question 16

Do alkali metals react with oxygen?

Answer 16

Yes

Question 17

Metal + Oxygen –> ?

Answer 17

Metal oxide

Question 18

Which metals react with water?

Answer 18

• Potassium
• Sodium
• Calcium

Question 19

Which metals react with acid?

Answer 19

• Potassium
• Sodium
• Calcium
• Magnesium
• Zinc
• Iron

Question 20

Which metals react with oxygen?

Answer 20

All on the reactivity series

Question 21

What is a displacement reaction?

Answer 21

When a more reactive metal displaces a less reactive metal by heating

Question 22

When do displacement reactions occur?

Answer 22

When the solid metal is more reactive than the metal in the compound

Question 23

What is an ore?

Answer 23

A rock that has metals chemically combined in it

Question 24

Why do unreacted elements not have to extracted chemically?

Answer 24

They are found as uncombined element

Question 25

How are metals high on the reactivity series extracted?

Answer 25

Electrolysis

Question 26

How are metals lower on the reactivity series extracted?

Answer 26

Heating by carbon to reduce them

Question 27

Only metals above --- in the reactivity series will react with dilute acids

Answer 27

Hydrogen

Question 28

Products of a metal and HCL?

Answer 28

Metal chloride and hydrogen

Question 29

Metal + 2HCL --> ?

Answer 29

MetalCl2 + H2

Question 30

Products of a metal and H2SO4?

Answer 30

Metal sulfate + Hydrogen

Question 31

Metal + H2SO4 --> ?

Answer 31

MetalSO4 + H2

Question 32

Sulfuric acids + Metals --> --- salts

Answer 32

Sulfate salts

Question 33

Hydrochloric acids + Metals --> --- salts

Answer 33

Chloride salts

Question 34

Bases all have pH values above ---?

Answer 34

7

Question 35

Acid + Base --> ?

Answer 35

Salt + Water

Question 36

If the base is a metal carbonate then: | Acid + Base --> ?

Answer 36

Salt + Water + Carbon Dioxide

Question 37

Uses of salts?

Answer 37

- Fertilisers - Batteries - Fungicides

Question 38

Calcium ion?

Answer 38

Ca2+

Question 39

Group 7 halide ions?

Answer 39

X-

Question 40

Group 1 metals?

Answer 40

X+

Question 41

Magnesium ion?

Answer 41

Mg2+

Question 42

Phosphate ion?

Answer 42

PO4 3-

Question 43

Sulfate ion?

Answer 43

So4 2-

Question 44

Carbonate ion?

Answer 44

CO3 2-

Question 45

Hydrogen carbonate ion?

Answer 45

HCO3 -