revision topic 4 Flashcards
what are the uses of copper
- pipes that carry water since they are not very reactive and can be bent easily
- wires that would conduct electricity
what are copper alloys and there uses
- tin to make ships propellers because of its toughness and its resistance to corrosion
- brass can be used in musical instruments because it’s harder than copper but workable
what are Aluminum alloys and their uses
Aluminum has many alloys that can be used in many things, for example, strong aluminum can be used in armor plating on tanks
what are gold alloys and their uses
gold is usually alloyed with copper to make jewelry
explain how the blast furnace works?
the blast furnace works by adding carbon onto a metal core to displace it, in order for it to work it needs the metal needs to be less reactive than carbon, in this reaction the metal would be reduced and the carbon would be oxidized
what is cast iron used for
to make manhole covers on the road and to make engines
what are steels?
alloys of iron
what are type of steel alloys are there?
carbon steel - which is the cheapest, easily shaped, and can produce knives, the body of cars, machinery
low-alloy steels - which are more expensive than carbon steels, very hard, and are suited for a particular use
high alloy steel - for example, stainless steel which is used in cutlery and in reaction vessels since it hard tough and has a resistance to corrosion
what is the reactivity series
the reactivity series is a list of metals from their order of reactivity
how can you determine the place of metal on the reactivity series
by looking at its reaction with water and dilute acid, or by displacement reaction
place the metals in order of reactivity
potassium sodium lituim calcuim magnisuim aliminuim zinc iron tin lead copper silver gold
explain how displacements reaction would show which metal is more reactive
a more reactive metal would displace a less reactive metal showing us which is more reactive
where does hydrogen lay in the reactivity series?
between copper and lead
what is oxidation
loss of electrons
what is reduction
gain of electrons
