Reactivity Series

Question 1

Why group 1 are the most active metals

Answer 1

As they are more readily to lose electrons than other metals

Question 2

Why Group 7 contain most active non-metal

Answer 2

As they are more readily to gain electrons than other non metals

Question 3

Reactivity series of metal____down group

Answer 3

Increase

Question 4

Reactivity series of non-metals _____down group

Answer 4

Decrease

Question 5

What are the very active metals with arranging

Answer 5

K,na,ba,ca,mg,al

Question 6

What are moderately active metal

Answer 6

Zn
Fe
Sn
Pb

Question 7

What are least active metals

Answer 7

Cu
Hg
Ag
Au
Pt

Question 8

Balanced chemical equation with symbols for reaction of active metal with water(ca,na)

Answer 8

2Na(s)+2H2o(l)=>2NaoH(aq)+H2(g)
Ca(s)+2H2o(l)=>Ca(oH)2(aq)+H2(g)

Question 9

K and Na react____with cold water

Answer 9

Violently

Question 10

Ca react ____with cold water

Answer 10

Readily

Question 11

Why calcium react readily with water

Answer 11

To form bubbles of hydrogen and to form calcium hydroxide solution

Question 12

Mg_____with cold water

Answer 12

Very slow

Question 13

What will happen when mg heat in steam?

Answer 13

Mg change from shiny grey solid to to white powder of mgo

Question 14

Write balance equator with symbols when mg heat in steam

Answer 14

Mg(s)+H2o(l) =>Mgo(s)+H2(g)

Question 15

What happen when Zn and Fe react with steam

Answer 15

Form metal oxide with hydrogen

Question 16

Write balanced equation with symbols
Zinc+hydrochlicacid=>zinc chloride +hydrogen

Answer 16

Zn(s)+2Hcl(aq)=>Zncl2(aq)+H2(g)

Question 17

Zinc+sulphuric acid=>zincsulphate+hydrogen

Answer 17

Zn(s)+H2So4(aq)=>ZnSo4(aq)+H2(g)

Question 18

Why active metals like potassium and sodium can’t react with acid

Answer 18

As its too dangerous and cause explosion

Question 19

Why aluminium seems unreactive metal?

Answer 19

Due to protective layer of oxide Al2O3 which adheres to the metal

Question 20

Some properties of displacement reaction

Answer 20

Redox
Most are exothermic

Question 21

What will happen when we add copper to zincsulphate

Answer 21

No reaction

Question 22

What will happen when we add copper to magnesium sulphate

Answer 22

No reaction

Question 23

What will happen when we add zinc to copper(ll)sulphate

Answer 23

Redish brown dopesit of cu forms
Blue colour of solution fades

Question 24

Balanced equation when zinc added to copper(ll)sulphate solution

Answer 24

Zn(s)+CuSo4(aq)=>Znso4(aq)+Cu(s)

Question 25

What will happen when we heat carbon added to metaloxide

Answer 25

Reduction of oxides in metals below carbon in activity series

Question 26

Balanced chemical equation
Iron(III)oxide+carbon=>iron +carbondioxide

Answer 26

2Fe2O3+3c=>4Fe+3Co2

Question 27

Active metals found in____form

Answer 27

Compound

Question 28

Unactive metal found in_____form

Answer 28

Element

Question 29

How active metal are extracted?

Answer 29

Electrosis

Question 30

How moderate active metals extracted

Answer 30

By reduction of metal oxide in the blast furnace by carbon

Question 31

Describe two observations made when mg burn in aor

Answer 31

White solid and white flame

Question 32

Describe a test to show that bubbles contain hydrogen gas

Answer 32

Burn with pop sound