metal stuff

Question 1

list the reactivity series in song

Answer 1

Potassium
Sodium
Calcium
Magnisium
Aliminium
(copper)
Zinc
Iron
Tin
Lead
(hydrogen)
Copper
Silver
Gold
Platinium

Question 2

Metals that really react with water

Answer 2

Poassium
Sodium
Lithium
Calcium

Question 3

What is the strongest reaction w water

Answer 3

Fizzing
give off hydrogen so theres a pop
leaves an alkaline solution of metal hydroxide

Question 4

slow reaction with water

Answer 4

mag
aliminum
zinc
iron

Question 5

slight reaction with steam to water

Answer 5

tin
lead

Question 6

NO reaction to water

Answer 6

copper
silver
gold

Question 7

Explodes w dilute acid

Answer 7

potassium
sodium
lithium

Question 8

fizzes with dilute acid

Answer 8

cacium
magnesium
aliminium
zinc
iron

Question 9

what else do things that fizz w dilute acid do

Answer 9

give off hydrogen gas and form a salt

Question 10

slow reaction w warm acid to dilute acid

Answer 10

tin
lead

Question 11

no reaction to dilute acids

Answer 11

copper
silver
gold

Question 12

What happens when metals react

Answer 12

They lose an electron and become a positive ion

Question 13

What is displacement

Answer 13

When a metal higher up the reactiviyt series displaces one lower

Question 14

What is a redox reaction

Answer 14

Something that includes the loss and gain of electrons

Question 15

What is oxidisation

Answer 15

Loss of electrons

Question 16

What is reduction

Answer 16

Gain of electrons

Question 17

What is a metal ore

Answer 17

something that constains enough metal to be extracted with an economical profit

Question 18

What does carbon do with metals

Answer 18

Its often used to displace metals that are less reactive to extract them.

Question 19

How are metals more reactive than carbon extracted

Answer 19

They are extracted by electrolysis of the metal compound

Question 20

How are non reactive metals extracted

Answer 20

Metals such as gold come in their natural state from the ground

Question 21

What is coppers issue

Answer 21

It is finite and running out

Question 22

How is coppers issue being solved

Answer 22

Finding new methods of extracting copper from lower grade ores

Question 23

Explain phytomining

Answer 23

Absbable plants are grown on soil that contains the low grade copper ore, as they grow they store concentrated copper compounds. Theyre then burnt and their ashes will contain the copper compound, which is then dissolved into an acid to form leachate- and then electrolysis or scrap iron will produce pure copper.

Question 24

Explain Bioleaching

Answer 24

This is feeding bacteria the low grade metal ores and they produece a solution called leachate which contains copper ions, you can then either electrolysis or scrap iron it to be pure

Question 25

How is the copper extracted from the compounds?

Answer 25

Its either displaced using scrap irons whcih are cheaper or using electrolysis.

Question 26

Two main methods of wxtracting copper from copper rich ores

Answer 26

sulphuric acid makes copper sulphate solution and is then extracted copper metal smelting which means heating it to make impure copper

Question 27

what do alkalines prpoduce

Answer 27

OH- when added to water

Question 28

what to acids do

Answer 28

create a hydrogne ion when reacted with aqueous solutions

Question 29

what are bases

Answer 29

substances that neutralise acids

Question 30

ways to test ph

Answer 30

univeral indicator- goes dif rainbow coll=ours at the level of acidity ph probe- electronic scale litmus paper- red for acid

Question 31

name some strong acids

Answer 31

hydrochloric acid nitric acid sulfuric acid

Question 32

name weak acids

Answer 32

ethanoic acid citric acid carbonic acid

Question 33

why are strong acids stronger

Answer 33

they ionise completely and all the molecules release h+ ions

Question 34

why are weak acids weak

Answer 34

the molecules will recombine to the orignial form or some will and not all molecules will release an H ion

Question 35

as ph decreases by one unit..

Answer 35

hydrogen concentration increases by ten times

Question 36

salt equation

Answer 36

metal + acid = salt + hydrogen

Question 37

when is salt formed

Answer 37

when the hydrogen has been displaced by the emtal ion

Question 38

what kinda reaction is metal and acid

Answer 38

redox becuase the hydrogen gains electrons and the salt loses them

Question 39

explain insiluable bases practical

Answer 39

heat the sulphuric acid ina beaker but not until it boils and then add slowly the metal with a spactula and stir continuedly until there is excess metal and the mixture is blue but with excess so the metal has fully reacted as much as it can. filter out the mixture so the excess metal is gone and youre left with the blue mixture and then heat it gently over water in an evapourating dish until crystals start to form. then leave it somewhere farm for about a day and dry it in filter paper.

Question 40

salt + water equation

Answer 40

hydroxide/ alk + acid = salt + water

Question 41

salt + water + co2 equation

Answer 41

metal carbonate + acid= salt + water + co2

Question 42

neutralisation reaction

Answer 42

acid + base = salt + water

Question 43

how does the erroding of limestone work as an equation

Answer 43

limestone is a metal carbonate which is erroded by acid, calcium carbonate plus acid is calcium chloride plus water plus carbon dioxide

Question 44

what are spectator ions

Answer 44

ions not a part of the equation