metals

Question 1

how are metal oxides formed?

Answer 1

when any metal reacts with oxygen

Question 2

what does potassium permanganate give of when heated?

Answer 2

oxygen

Question 3

how is iron extracted from its ore?

Answer 3

using a blast furnace

Question 4

how is mercury extracted from its ore?

Answer 4

using heat

Question 5

how is zinc extracted from its ore?

Answer 5

by heating it strongly with carbon

Question 6

which two metals were the latest to be discovered and why?

Answer 6

lithium and sodium because to be discovered they need such high heat because they are so reactive

Question 7

how are the most reactive metals(lithium to sodium) extracted?

Answer 7

using electrolysis

Question 8

how will lithium sodium potassium an d magnesium react with water?

Answer 8

they will react with the water to produce a metal hydroxide gas

Question 9

how will lithium sodium potassium and magnesium react with acid?

Answer 9

when reacted with acid these metals produce a metal salt and hydrogen gas

Question 10

how will lithium sodium potassium and magnesium react with oxygen?

Answer 10

they will produce a metal oxide

Question 11

how will aluminium,zinc,iron,nickel,tin and lead react with water?

Answer 11

they don’t react with water

Question 12

how will aluminium,zinc,iron,nickel,tin and lead react with acid?

Answer 12

they will produce a metal salt and a hydrogen gas

Question 13

how will aluminium,zinc,iron,nickel,tin and lead react with oxygen?

Answer 13

they will produce a metal oxide

Question 14

how will copper,silver and mercury react with water?

Answer 14

they dont react

Question 15

how will copper,silver and mercury react with acid?

Answer 15

they don’t react

Question 16

how will copper,silver and mercury react with oxygen?

Answer 16

they will produce a metal oxide

Question 17

does gold react with anything?

Answer 17

no it is very unreactive

Question 18

where do the most reactive metals sit in the reactivity series?

Answer 18

at the top

Question 19

where do the most unreactive metals lie in the reactivity series?

Answer 19

at the bottom

Question 20

what does a metal produce when it is reacted with water?

Answer 20

a metal hydroxide solution and hydrogen gas

Question 21

what does a metal produce when it is reacted with an acid?

Answer 21

a metal salt and hydrogen

Question 22

what does a metal produce when reacted with oxygen?

Answer 22

a metal oxide

Question 23

what is an ore?

Answer 23

an ore is a rock containing a naturally occuring metal compound

Question 24

what is an irons ore called?

Answer 24

haematite

Question 25

what is a magnesiums ore called?

Answer 25

magnesite

Question 26

what is an aluminium ore called?

Answer 26

bauxite

Question 27

what do most ores contain?

Answer 27

metal oxides

Question 28

what are the two metal oxides that can be extracted from its ore using heat alone?

Answer 28

silver oxide and mercury oxide

Question 29

what are examples of things that iron is used for?

Answer 29

machinery,vehicles,tools,grinders for bridged and large building

Question 30

what raw materials are added to a blast furnace?

Answer 30

iron ore coke limestone

Question 31

what is electrolysis?

Answer 31

electrolysis is the splitting up of a compound into it elements using electricity

Question 32

what is a displacement reaction?

Answer 32

metals higher up in the reactivity series will displace those lower down

Question 33

what is an example of a displacement reaction?

Answer 33

zinc+copper sulfate-zinc sulfate + copper

Question 34

what happens when a metal is exposed to the environment?

Answer 34

it changes its ions which is called corrosion

Question 35

what happens during corrosion?

Answer 35

the surface of a metal changes into a compound

Question 36

what is the name for corrosion of iron/steel?

Answer 36

rusting

Question 37

what is corrosion?

Answer 37

corrosion is a chemical reaction where the surface of a metal changes into a compound

Question 38

what is rusting?

Answer 38

rusting is the special name given to the corrosion of iron

Question 39

what is steel made of?

Answer 39

iron and carbon

Question 40

what does uncombined/native mean?

Answer 40

metals that are found as an element naturally in native

Question 41

what causes corrosion?

Answer 41

differnet metals will corode at different rates due to their reactivity

Question 42

how is rusting detected?

Answer 42

using ferroxyl indicator

Question 43

how do you know if rust is present after using ferroxyl indicator?

Answer 43

if the indicator goes from a pale yellow to a deep blue

Question 44

what are 6 ways that can prevent rusting on iron?

Answer 44

painting plastic coating coating with oil and grease tin-plating galvanizing electroplating

Question 45

what are the advantages of using paint to prevent rust?

Answer 45

it is cheap and easy to apply

Question 46

what are some disadvantages of using paint to prevent rust?

Answer 46

it peels easily and it requires regular maintenance

Question 47

what are some advantages of using plastic coating to prevent rust?

Answer 47

it is hard wearing and long lasting

Question 48

what are some disadvantages of using plastic coating to prevent rust?

Answer 48

doesn't last long and it needs reapplied regularly

Question 49

what are some advantages of using oil and grease to prevent rust?

Answer 49

cheap and accessible

Question 50

what are some disadvantages of using oil and grease to prevent rust?

Answer 50

doesn't last long and it needs reapplied regularly

Question 51

what does galvanising steel involve?

Answer 51

coating steel with a thin layer of zinc

Question 52

what does electroplating do?

Answer 52

it uses electrolysis to coat a metal object with a thin layer of a second protective metal

Question 53

what are examples of electroplating?

Answer 53

gold and silver plated jewelry

Question 54

what happens when an object is electroplated?

Answer 54

the object is connected to the negative electrode,the solution contains ions of the plating metal and then the positive electrode is made out of the coating metal

Question 55

what is sacrificial protection?

Answer 55

connecting a metal that is above iron in the reactivity series will slow down the corrosion of iron

Question 56

what are commonly used metals used for sacrificial protection?

Answer 56

magnesium,aluminium and zinc

Question 57

why are magnesium aluminium and zinc used for sacrificial protection?

Answer 57

they are used as they corrode faster than normal when connected to iron as they transfer electrons to the iron

Question 58

how is a simple cell(a battery) made?

Answer 58

by joining zinc to copper

Question 59

what flows from the zinc electrode to the copper electrode?

Answer 59

an electric current

Question 60

how do zinc atoms produce electrons?

Answer 60

they have to change into zinc ions

Question 61

what happens when zinc atoms are oxidised?

Answer 61

each atoms looses two electrons

Question 62

what is a salt solution?

Answer 62

an electrolyte

Question 63

what completes the circuit?

Answer 63

the ions in the salt solution

Question 64

what is a battery made up of?

Answer 64

more than one more electrochemical cells joined together

Question 65

can all metals change their ions?

Answer 65

yes

Question 66

what happens when electrons come off of the metal atoms?

Answer 66

they build up on the surface

Question 67

how can measuring voltage be useful?

Answer 67

it gives a measure of the difference in their abilities to charge into their ions and give of electrons

Question 68

how are electrochemical cells formed?

Answer 68

from the basis of batteries

Question 69

what are everyday uses of batteries?

Answer 69

phones radios and personal music players

Question 70

what do all batteries provide?

Answer 70

a portable source of electricity

Question 71

how is electricity in a battery made?

Answer 71

by a chemical reaction

Question 72

what is the energy change occuring in a battery when it is in use?

Answer 72

chemical energy-->electrical energy