Chemistrt -2(products Rocks)

Question 1

Reactivity series acryonm

Answer 1

P
S
C
M
A
———
Z
I
T
C

Please, stop, calling, me, a, careless, zebra, instead, try, learning, how, copper, saves,gold

Question 2

If the metal is higher in reactivity series, what is used to extract metal?

Answer 2

Electrolysis

Question 3

Metals below carbon in reactivity series can be extracted how?

Answer 3

By reduction

Question 4

Reduction reaction to extract metal from an ore

Answer 4

Oxygen is removed from the metal by carbon

Question 5

Displacement reaction to extract metal

Eg.

Answer 5

If a more reactive metal is placed into a solution with a dissolved metal compound, it will displace it

Copper sulfate + iron—> iron sulfate + copper

Question 6

Which method of extraction of metals is expensive

Answer 6

Electrolysis is more expensive

Question 7

Why does copper tend to be electrolysed rather than reduction with carbon despite being lower in reactivity series?

Answer 7

Copper reduced by carbon is impure

This doesn’t conduct electricity very well

Pure copper is a good conductor

Question 8

Electrolyte

Answer 8

A liquid that conducts electricity

Generally metal salt solution made form the ore

Question 9

Electrolysis

Answer 9

Electrons pulled off at anode

Forms ions

Cathode gains electrons and turns ions back into atoms

Question 10

3 basic properties of metals

Answer 10

Strong (hard to break)

Great at conducting heat

Conduct electricity well

Question 11

Transition metals uses 3

Answer 11

Bendy (bridges/car bodies)

Saucepan

Electrical wires

Question 12

Why are metals not perfect

Answer 12

Can corrode when exposed to air/water

Can get tired (metal fatigue)

Question 13

Why is copper used in pipes?

Answer 13

Can be bent to make pipes

Below hydrogen in the reactivity series-doesn’t react with water