Metals Y8

Question 1

What type of metals is group 1

Answer 1

Alkali metals

Question 2

What is the reactivity series in order?

Answer 2

Most reactive
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Lead
Hydrogen
Copper
Silver
Gold

Question 3

How do you test for hydrogen?

Answer 3

Put a little splint in the test tube and if it makes a squeaky pop there’s hydrogen

Question 4

Do metals have high or low boiling and melting points?

Answer 4

High

Question 5

When cut metals are…

Answer 5

Shiny and soft

Question 6

The further down in group 1 you go the do they get more or less reactive.

Answer 6

More

Question 7

When alkali metals mix with water, what do they produce ?

Answer 7

A metal hydroxide+hydrogen

Question 8

Write the equations for:
Lithium +water
Sodium +water
Potassium +water

Answer 8

Lithium+water—> lithium hydroxide +hydrogen
Sodium+water —> sodium hydroxide+ hydrogen
Potassium+water—> potassium hydroxide +hydrogen

Question 9

When group 1 metals react with water what do they form?

Answer 9

An alkaline solution

Question 10

What else other than the metal hydroxide is produced when group 1 metals react with water?

Answer 10

Hydrogen

Question 11

What type of metals are in group 2?

Answer 11

Alkaline earth metals

Question 12

What do metals have to be higher than in the reactivity series to react with water?

Answer 12

Carbon

Question 13

Do salts have a charge?

Answer 13

they are neutral

Question 14

Where are alkali metals stored?

Answer 14

In oil as they can react with air

Question 15

Are all reactants on the reactivity series alkali metals?

Answer 15

No

Question 16

What do alkali metals do when they react with water?

Answer 16

Effervess and if high in reactivity series can spark or move violently.

Question 17

What colour does the universal indicator turn when mixed with group 1 metals?

Answer 17

Purple

Question 18

What’s produced when metal+acid

Answer 18

Metal+acid—> salt + hydrogen

Question 19

What are the names of these salts:
Hydrochloric
Sulphuric
Nitric

Answer 19

Chloride
Sulfate
Nitrate

Question 20

What’s the equations for:
Zinc+nitric acid
Iron+sulphuric acid
Magnesium+hydrochloric acid

Answer 20

Zinc+nitric acid —> zinc nitrate +hydrogen

Iron+sulphuric acid—> iron sulfate + hydrogen

Magnesium+hydrochloric acid—> magnesium chloride + hydrogen

Question 21

More effervessing= more reactive

Question 22

What is the displacement reaction equation?

Answer 22

More reactive metal+ less reactive metal compound —>more reactive metal compound+less reactive metal

Question 23

What is a displacement reaction?

Answer 23

When a more reactive metal takes the place of the less reactive metal in a compound .

Question 24

What is the equation for these displacement reactions?:
Zinc+copper sulfate
Magnesium+ zinc sulfate
Magnesium + iron sulfate

Answer 24

Zinc+copper sulfate —> zinc sulfate+ copper

Magnesium+ zinc sulfate—> magnesium sulfate+ zinc

Magnesium + iron sulfate—>magnesium sulfate+ iron

Question 25

What are the reagents for the thermite reaction?

Answer 25

Aluminium and iron oxide

Question 26

What does magnesium act as in the thermite reaction?

Answer 26

Magnesium acts like as a fuse with the igniter mixture provide the energy needs for the reaction to take place

Question 27

How does thermite reaction help to weld railways tracks?

Answer 27

When the iron is produced it is molten du pe to the high reaction temperature though it is dangerous and expensive

Question 28

What is an example of displacement reaction?

Answer 28

Thermite reaction

Question 29

What does it mean if a metal is over hydrogen in the reactivity series?

Answer 29

That metal can react with acids

Question 30

What does it mean if a metal is over carbon on the reactivity series?

Answer 30

That metal can react with water

Question 31

What is oxidation?

Answer 31

If a substance has gained oxygen it has been oxidised

Question 32

What is reduction?

Answer 32

If a substance has lost oxygen it has been reduced

Question 33

Complete the equations then say whichsubstances have been oxidised? Sodium+silver oxide Lead+ gold oxide

Answer 33

Sodium+ silver oxide —> sodium oxide +silver = sodium Lead +gold oxide—> lead oxide+gold =lead

Question 34

What is needed to rust or corrode?

Answer 34

Needs oxygen + water

Question 35

When any metal corrodes it is called ……… and when iron corrodes it is called……

Answer 35

Corroding and rust

Question 36

Word equation for rust?

Answer 36

Iron+ oxygen —> hydrated iron oxide

Question 37

What is the barrier method?

Answer 37

Putting a barrier between the iron and the air e.g painting or oiling , rubber coating

Question 38

What is the sacrificial protection method?

Answer 38

Attaching big blocks of metal more reactive than iron or the metal, this metal corrodes in preference

Question 39

What is the galvanising method?

Answer 39

Invokes covering metal in another metal more reactive

Question 40

What is the best anti rusting method?

Answer 40

Galvanising as it is bothe sacrificial method and a barrier method

Question 41

What do matters have to be higher than in the reactivity series to react with acids?

Answer 41

Hydrogen