Reactivity series

Question 1

What does the reactivity series show

Answer 1

List of metals arranged in order of their reactivity from highest to lowest

Question 2

Which group of metal is at the top of the reactivity series

Answer 2

Group 1

Question 3

What group of metal is near the bottom of the reactivity series

Answer 3

Transitional Metal

Question 4

What is a displacement reaction

Answer 4

When a more reactive metal replaces a less reactive metal in a reaction

Question 5

What is an ionic equation

Answer 5

Equation that includes the ion involved in the chemical reaction that lose/gain electron

e.g
Mg + Cu²⁺ –> Mg²⁺ + Cu

Question 6

What is a Redox Reaction

Answer 6

The transfer of ions between molecule, Reduction and oxidation

Question 7

Reduction reaction

Answer 7

Losing oxygen AND/OR gain electron

e.g
Mg + Cu²⁺ –> Mg²⁺ + Cu
Copper is reduction

Question 8

Oxidation reaction

Answer 8

Gaining oxygen AND/OR losing electron

e.g
Mg + Cu²⁺ –> Mg²⁺ + Cu
Magnesium is oxidation

Question 9

What happens to the reactivity of Group 1 metals as you go down the group?

Answer 9

-> It increases as it go down.

-> Because the valence electrons is further away from the nucleus

-> There is a weaker electrostatic force of attraction between the nucleus and valence electron

-> Easier for the atom to lose electrons.

Question 10

What is the product of metal + water

Answer 10

Metal hydroxide + hydrogen

Question 11

What is the product of metal + acid

Answer 11

Salt + hydrogen

Question 12

What is the product of metal + oxygen

Answer 12

Metal oxide

Question 13

How do you test for group 1 metal in the reactivity series

Answer 13

Add the metal into water and observe how reactive it is.
And then add Ph indicator into water, if it turns purple, it is group 1 metal

This is because they are alkali metal

Question 14

What is the equation for rusting

Answer 14

iron + oxygen -moisture-> hydrous iron(iii) oxide

Question 15

Why does the barrier method avoid rusting

Answer 15

This prevents oxygen from reaching the metal/iron and slows rusting

Question 16

What can you use as a barrier method

Answer 16

Oil or paint

Question 17

What is galvanisation

Answer 17

Covering iron with a zinc coating to prevent oxygen from reacting with iron
Also act as a sacrificial metal

Question 18

How does the sacrificial metal method work

Answer 18

Placing a more reactive metal around the iron to allow oxygen to react with the more reactive metal first

e.g on ship’s hull

Question 19

What does iron need to rust

Answer 19

Water (moisture) and oxygen

Question 20

Why is galvanising more effective than using paint as barrier method

Answer 20

Even when the zinc is scratched, the zinc will act as a sacrificial metal and still protect the rust

Question 21

Why is there no temperature rise when gold is added

Answer 21

As gold is inert and unreactive

Question 22

What is an oxidising agent

Answer 22

A substance that will cause oxidisation to happen
e.g
Mg + Cu²⁺ –> Mg²⁺ + Cu
Magnesium is oxidation
and Copper is oxidising agent

Question 23

What kind of method of protection from rusting should a car body use

Answer 23

Paint

Question 24

What kind of method of protection from rusting should a bucket use

Answer 24

Galvanising

Question 25

What kind of method of protection from rusting should a bike chain use

Answer 25

Oil

Question 26

What colour is copper (ii) carbonate

Answer 26

Green

Question 27

Is copper(ii) carbonate soluble

Answer 27

No

Question 28

What colour is a rust

Answer 28

Brown

Question 29

Put these elements in order of decreasing reactivity: Silver, lithium, sodium, magnesium

Answer 29

Sodium, lithium, magnesium, silver

Question 30

What do you see with potassium in water

Answer 30

-> Potassium floats -> lilac flame -> Moves around fast -> Vigorous effervescence

Question 31

Give the formula of Iodine

Answer 31

I -

Question 32

Give the formula of Aluminium Sulfate

Answer 32

Al2(SO4)3

Question 33

Give the formula of an ammonium ion

Answer 33

NH4+

Question 34

What change do you observe when magnesium reacts with copper oxide?

Answer 34

-> Black solid Copper Oxide forms (CuO) -> Magnesium react with copper to making Magnesium Oxide --> White solid (MgO)

Question 35

What do you see with sodium and water when they react?

Answer 35

-> Sodium floats -> Melts into a ball -> Moves around fast -> Vigorous effervescence

Question 36

What do you see when you react lithium with water?

Answer 36

-> Lithium floats -> Moves around -> Effervescences

Question 37

Iron, copper, Magnesium and zinc are place in test tubes with HCL Which metal reacts vigorously?

Answer 37

Magnesium

Question 38

What is the abundance of oxygen in the atmosphere?

Answer 38

0.21 or 21 percent

Question 39

Give the abundance of argon in the atmosphere?

Answer 39

0.01

Question 40

What will you observe when copper sulfate reacts with zinc?

Answer 40

--> A blue solution will turn colourless -> A grey metal disappears -> Pink solid formed

Question 41

Iron, copper, magnesium and zinc are place in test tubes with HCl. Which metal DOESNT react?

Answer 41

Copper

Question 42

Give an equation for the reaction of copper and silver nitrate

Answer 42

Cu + AgNO3 --> Ag + CuNO3

Question 43

What reaction does zinc give off in HCl

Answer 43

Steady fizz

Question 44

Which metals react with steam?

Answer 44

Magnesium, aluminium, zinc, iron MAZI

Question 45

Give word and symbol equation for the reaction of sodium with water

Answer 45

sodium+water->sodium hydroxide+hydrogen 2Na + 2H20 --> 2NaOH + H2

Question 46

What is the chemical formular of carbonate

Answer 46

CO²⁻₃

Question 47

What is the chemical formular of sulfate

Answer 47

SO²⁻4

Question 48

Acronym for order of reactivity of metals (highest to lowest)

Answer 48

PSCMA ZI CSG potassium, sodium, calcium, magnesium, aluminium (most reactive) zinc, iron (middle reactive) copper, silver, gold (least reactive)