Chemical Changes

Question 1

Reactivity series

Answer 1

K,Na,Li,Ca,Mg,Al,C,Zn,Fe,Ni,Sn,Pb,H,Cu,Hg,Ag,Au,Pt

Question 2

What are rocks that contain metals called?

Answer 2

Ores

Question 3

What must a happen to a metal for it to be pure

Answer 3

Must be reduced

Question 4

How is the reactivity series determined?

Answer 4

Observing reactions with water and dilute acid

Question 5

What is the reaction when a metal pushes out another called

Answer 5

Displacement

Question 6

What is a displacement reaction

Answer 6

When a more reactive metal pushes out a less reactive metal in a compound

Question 7

Metal+water——->

Answer 7

Metal Hydroxide+ Hydrogen

Question 8

Metal + Acid————>

Answer 8

Salt+Hydrogen

Question 9

Metal+Oxygen———>

Answer 9

Metal Oxide

Question 10

Ores are only mined when?

Answer 10

The desired metal is abundant enough to be profitable

Question 11

When does reduction when

Answer 11

When the metal is less reactive than carbon

Question 12

When does electrolysis happen

Answer 12

When the metal is more reactive than carbon

Question 13

Why is gold found as an element

Answer 13

It’s native so it doesn’t react to form ores

Question 14

When is extraction not required

Answer 14

When the metals are native (unreactive)

Question 15

Is electrolysis or Reduction used for Potassium?

Answer 15

Electrolysis

Question 16

Is electrolysis or Reduction used for sodium?

Answer 16

Electrolysis

Question 17

Is electrolysis or Reduction used for calcium?

Answer 17

Electrolysis

Question 18

Is electrolysis or Reduction used for magnesium?

Answer 18

Electrolysis

Question 19

Is electrolysis or Reduction used for aluminium?

Answer 19

Electrolysis

Question 20

Is electrolysis or Reduction used for zinc?

Answer 20

Reduction

Question 21

Is electrolysis or Reduction used for iron?

Answer 21

Reduction

Question 22

Is electrolysis or Reduction used for lead?

Answer 22

Reduction

Question 23

Is electrolysis or Reduction used for copper?

Answer 23

Reduction

Question 24

Is electrolysis or Reduction used for silver?

Answer 24

Neither the metal is native

Question 25

Is electrolysis or Reduction used for gold?

Answer 25

Neither the metal is native

Question 26

Is electrolysis or Reduction used for platinum?

Answer 26

Neither the metal is native

Question 27

Hydrochloric acid salt

Answer 27

Chloride

Question 28

Sulfuric acid salt

Answer 28

Sulfate

Question 29

Nitric acid salt

Answer 29

Nitrate