Metals

Question 0

What are native metals?

Answer 0

Metals that do not have to be extracted as they occur naturally, silver, gold and platinum

Question 1

What is the point of refining the reactivity series?

Answer 1

So that we know how difficult it is to extract the metal from its ore

Question 2

Are metal oxides alkaline or acidic?

Answer 2

Alkaline

Question 3

What does ‘tarnish’ mean?

Answer 3

A metal tarnishes when it has been exposed to oxygen and a thin layer of metal oxide forms on the surface. Not all metals tarnish

Question 4

How can you tell which metal is the most reactive by looking at its reaction with oxygen?

Answer 4

It’s reaction with oxygen tells us how reactive or unreactive it is

Question 5

Aluminiums reaction with oxygen and heat

Answer 5

After 2.5 minutes under a roaring blue flame it melted a little, no tarnishing before

Question 6

Zinc’s reaction with oxygen and heat

Answer 6

First tarnished with pinky brown oxide layer but it could be wiped off.
Bigger tarnish in roaring blue flame

Question 7

Magnesium’s reaction with oxygen and heat

Answer 7

First tarnished and the oxide layer was hard to rub off
In roaring blue flame at 20 seconds there was a spark and then at 24 seconds it gave off a white light. Afterwards it fell apart every easily and was black and was very brittle

Question 8

Iron’s reaction with heat and oxygen

Answer 8

No tarnish
When put on a soft blue flame, Gives off a bad smell, after 23 seconds it starts to tarnish form the bottom up and turned black

Question 9

Copper’s reaction with oxygen and heat

Answer 9

Tarnished a bit with browny/orange discolouration and could not be rubbed off
When in blue flame it went a darker colour

Question 10

What can we tell from a metal’s reaction with acid?

Answer 10

The more reactive the metal, the faster the reaction will go

Speed of the reaction indicated by the amount of bubbles given off

Question 11

Word equation for metal and acid reaction

Answer 11

Acid + metal —> Salt + Hydrogen

Question 12

What type of salt will form when a metal is reacted with hydrochloric acid?

Answer 12

Chloride salts

E.G. Hydrochloric acid + magnesium —> magnesium chloride + hydrogen

Question 13

What type of salt will form when a metal is reacted with sulfuric acid?

Answer 13

Sulfate salts

E.G. Sulfuric acid + magnesium —> magnesium sulfate + hydrogen

Question 14

What is the word equation for metals reaction with water? ( and steam)

Answer 14

Metal + water —> metal hydroxide + hydrogen

Less reactive Metal + steam —> metal oxide + hydrogen

Question 15

Examples of metals that will vigorously react with water

Answer 15

Potassium, sodium, lithium and calcium

Question 16

Example of metal that will not really react with water but will react with steam

Answer 16

Magnesium, zinc and iron

Question 17

What metal won’t react with either water or steam?

Answer 17

Copper

Question 18

Magnesiums reaction with water and acid

Answer 18

Water - No Reaction
Acid - Without heat, it fizzes and floats creating a white foam layer on top of the acid. It heats and gives off a vapour. After about a minute it has reacted with the acid and is gone.

Question 19

Copper’s reaction with water and acid

Answer 19

Water - no reaction
Acid - Gurgling after about 40 secs. Acid goes yellow and oxide layer/tarnish is removed after 1min 10secs. Other than that no physical change to copper

Question 20

Iron’s reaction with water and acid

Answer 20

Water - no reaction

Acid - No heat, tarnish comes off almost immediately. Bubbles formed on the nail. Gives off hydrogen

Question 21

Calcium’s reaction with water and acid

Answer 21

Water - Instantly reacted and fizzed

Question 22

Aluminium’s reaction with water and acid and steam

Answer 22

Water - Mixed and fizzed a lot
Acid - Violent reaction bubbled over test tube
Steam - Fizzing (hydrogen being given off) bubbling

Question 23

Zinc’s reaction with water and acid

Answer 23

Water - No reaction
Acid - Many bubbles once heated
Steam - Few bubbles

Question 24

Why do displacement reactions occur with metals?

Answer 24

A more reactive metal displaces a less reactive metal

Question 25

What happens if you put a reactive metal into a solution of a less reactive metal salt? Give an example

Answer 25

The reactive metal will replace the less reactive metal in the salt

E.G. Copper sulphate + iron —> iron sulphate + copper
Because iron is more reactive than copper it displaces the copper out of the sulphate solution

Question 26

The reactivity series with their symbol

Answer 26

Potassium - K
sodium - Na
lithium - Li
calcium - Ca
magnesium - Mg
aluminium - Al
(carbon)
zinc - Zn
iron - Fe
tin - Sn
lead - Pb
(hydrogen) 
copper - Cu
silver - Ag
gold - Au
platinum - Pt

Question 27

Way to remember the reactivity series?

Answer 27

Polly
Steals
Lola's
Cat
Meg
And 
Capapults
Zebras
Into 
The 
Little
Hippo
Cage
Sabotaging
Geoffrey's  
Plan