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Chemistry GCSE > Group 7 - The Halogens (2) > Flashcards

Group 7 - The Halogens (2) Flashcards

0
Q

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

A

Increase

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1
Q

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

A 
Flouride
Sodium
Chloride
Silver bromide
Potassium iodide
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2
Q

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

A

Diatomic

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3
Q

True or false: flourine and chlorine are gases

A

True

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4
Q

Is bromine a solid, liquid or a gas

A

Liquid

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5
Q

Is iodine a solid, liquid or gas

A

Solid

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6
Q

What colour is flourine

A

Yellow

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7
Q

What colour is chlorine

A

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

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9
Q

What colour is liquid bromine and its vapour

A

Dark red liquid - red/brown vapour

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9
Q

Are halogens metals

A

No

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10
Q

What colour is solid iodine and its vapour

A

Dark grey - purple vapour

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12
Q

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

A

Iodine

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13
Q

Is bromine corrosive

A

Yes

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14
Q

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

A

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

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15
Q

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

A

Hydrogen chloride

Hydrogen bromide

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16
Q

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

A

Gas

17
Q

More reactive halogens will ____________ less reactive ones

A

Displace

18
Q

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

A

No reaction

19
Q

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

A

No reaction

20
Q

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

A

No reaction

21
Q

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

A 
Bromine water
Orange solution (Br₂) formed
22
Q

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

A

No reaction

23
Q

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

A

No reaction

24
Q

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

A 
Iodine water
Brown solution (I₂) formed
25
Q

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

A 
Iodine water
Brown solution (I₂) formed
26
Q

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

A

No reaction

27
Q

What is a displacement reaction

A

When a more reactive element ‘pushes out’ a less reactive element from a compound

28
Q

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

A

Aqueous

29
Q

What colour is chlorine water

A

Colourless

30
Q

What colour is bromine water

A

Orange

31
Q

What colour is iodine water

A

Brown

32
Q

Hydrogen chloride dissociates in water but not in __________________

A

Methylbenzene

33
Q

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

A 
H+
Cl-
Dissociation
Hydrochloric
Acidic
H+
34
Q

Halogen displacement reactions involve transfer of ______________

A

Electrons

Chemistry GCSE (28 decks)

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