Group 7 - The Halogens (2)

Question 0

As the molecules get larger towards the bottom of the group, the melting and boiling points _________

Answer 0

Increase

Question 1

The name halogen means salt producing. When they react with metals, these elements produce a wide range of salts such as:

Answer 1

Flouride
Sodium
Chloride
Silver bromide
Potassium iodide

Question 2

The halogens are non-metallic elements with _____________ molecules: F₂, Cl₂

Answer 2

Diatomic

Question 3

True or false: flourine and chlorine are gases

Answer 3

True

Question 4

Is bromine a solid, liquid or a gas

Answer 4

Liquid

Question 5

Is iodine a solid, liquid or gas

Answer 5

Solid

Question 6

What colour is flourine

Answer 6

Yellow

Question 7

What colour is chlorine

Answer 7

Green (in small quantities it’s fairly yellowish green)

Question 9

What colour is liquid bromine and its vapour

Answer 9

Dark red liquid - red/brown vapour

Question 9

Are halogens metals

Answer 9

No

Question 10

What colour is solid iodine and its vapour

Answer 10

Dark grey - purple vapour

Question 12

When the halogens are solid (eg. _________ at room temperature) their crystals will be brittle

Answer 12

Iodine

Question 13

Is bromine corrosive

Answer 13

Yes

Question 14

The higher up group 7 an element is, the _________ reactive it is. Why?

Answer 14

More because the shell with missing electron is nearer to the nucleus, so the pull from the positive nucleus is greater

Question 15

Halogens can combine with hydrogen to form hydrogen halides E.g …

Answer 15

Hydrogen chloride

Hydrogen bromide

Question 16

Hydrogen chloride has the formula HCl and is a _______ at room temperature

Answer 16

Gas

Question 17

More reactive halogens will ____________ less reactive ones

Answer 17

Displace

Question 18

Will there be a reaction and if so what will be formed when: Potassium chloride reacts with Chlorine water

Answer 18

No reaction

Question 19

Will there be a reaction and if so what will be formed when: Potassium chloride reacts with Bromine water

Answer 19

No reaction

Question 20

Will there be a reaction and if so what will be formed when: Potassium chloride reacts with Iodine water

Answer 20

No reaction

Question 21

Will there be a reaction and if so what will be formed when: Potassium bromide reacts with Chlorine water

Answer 21

Bromine water
Orange solution (Br₂) formed

Question 22

Will there be a reaction and if so what will be formed when: Potassium bromide reacts with Bromine water

Answer 22

No reaction

Question 23

Will there be a reaction and if so what will be formed when: Potassium bromide reacts with Iodine water

Answer 23

No reaction

Question 24

Will there be a reaction and if so what will be formed when: Potassium iodide reacts with chlorine water

Answer 24

Iodine water
Brown solution (I₂) formed

Question 25

Will there be a reaction and if so what will be formed when: Potassium iodide reacts with bromine water

Answer 25

``` Iodine water Brown solution (I₂) formed ```

Question 26

Will there be a reaction and if so what will be formed when: Potassium iodide reacts with iodine water

Answer 26

No reaction

Question 27

What is a displacement reaction

Answer 27

When a more reactive element 'pushes out' a less reactive element from a compound

Question 28

In a halogen displacement reaction - all of the compounds are ____________ (solid, liquid, gas or aqueous?)

Answer 28

Aqueous

Question 29

What colour is chlorine water

Answer 29

Colourless

Question 30

What colour is bromine water

Answer 30

Orange

Question 31

What colour is iodine water

Answer 31

Brown

Question 32

Hydrogen chloride dissociates in water but not in __________________

Answer 32

Methylbenzene

Question 33

When hydrogen chlorine is dissolved in water the HCI molecules split up into _____ ions and _____ ions - this process it called _______________. The solution that is formed is called __________________ acid which is an ___________ solution because it contains _______ ions

Answer 33

``` H+ Cl- Dissociation Hydrochloric Acidic H+ ```

Question 34

Halogen displacement reactions involve transfer of ______________

Answer 34

Electrons