Reactivity Of Metals

Question 1

What are the reactions like with cold water for potassium sodium, and lithium?

Answer 1

Violent

Question 2

What are the reactions with dilute acids like for potassium sodium, and lithium?

Answer 2

Violent

Question 3

What is the reaction of cold water like for calcium?

Answer 3

Fast

Question 4

What is the reaction like with cold water for magnesium?

Answer 4

Very slow

Question 5

What is the reaction with dilute acids and calcium or magnesium like?

Answer 5

Rapid

Question 6

What is the reaction between cold water and zinc like?

Answer 6

There is usually. No reaction

Question 7

What is the reaction with cold water and iron like?

Answer 7

Rusts slowly

Question 8

What is the reaction between dilute acids and zinc or iron like?

Answer 8

Slow

Question 9

What is the reaction between cold water and copper or gold like?

Answer 9

There is no reaction

Question 10

Reaction between dilute acids and copper or gold like

Answer 10

There is no reaction

Question 11

Reaction between dilute acids and copper or gold like

Answer 11

There is no reaction

Question 12

If a metal is more reactive, what does that mean about its reactions?

Answer 12

They are more vigourous and it is easier for them to lose electrons

Question 13

What does a less reactive metal in a corrosive environment do to the lifespan of a structure?

Answer 13

Extends it

Question 14

If you hold a burning splint with task tube after reacting a metal with dilute acid, how do you know whether it’s reactive or not?

Answer 14

Loud Pop will be heard if the metal is reactive And a quieter pop will be hard if the metal is not as reactive

Question 15

What happens if you react to metal with a different metal compound and the metal is more reactive than one of the metals in the metal compound?

Answer 15

The more reactive metal takes the less reactive metals spot

Question 16

What is formed when a metal reacts with a dilute acid?

Answer 16

A Salt and hydrogen

Question 17

What is oxidation?

Answer 17

A gain of oxygen

Question 18

What is reduction?

Answer 18

A loss of oxygen

Question 19

When metals react with oxygen, what do they form?

Answer 19

Metal oxides

Question 20

Why do we find iron in ores not pure iron ?

Answer 20

Because it gets oxidised

Question 21

Why can we find pure silver gold and platinum

Answer 21

Because they are resistant to oxidation

Question 22

What is reduction and how can you do it?

Answer 22

Reduction is removing oxygen from a metal compound you can use carbon to reduce an oxidised metal if the metal is less reactive than carbon otherwise you have to use electrolysis

Question 23

What is formed when copper oxide reacts with carbon? What is reduced and what is oxidised?

Answer 23

Carbon (oxidised)dioxide and copper (reduced)

Question 24

What type of copper is produced from copper oxide by heating with carbon?

Answer 24

Molten copper

Question 25

What type of iron is produced when reacted with carbon?

Answer 25

Molten iron

Question 26

Why is carbon more efficient than electrolysis but why doesn’t it always work?

Answer 26

Because it is cheaper, however carbon cannot extract compounds if the metal is more reactive than itself

Question 27

What is an ore?

Answer 27

Brooke that contains enough of a metal or metal compound to make extracting the metal worthwhile

Question 28

What is oxidation in term of electrons?

Answer 28

Loss of electrons (OIL)

Question 29

What is reduction in terms of electrons?

Answer 29

Gain of electrons (RIG)