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Chemistry > Halogens > Flashcards

Halogens Flashcards

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1
Q

Halogens are group

A

7

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2
Q

Halogens are … Molecules

A

Diatomic

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3
Q

Fluorine is which state and which colour

A

Gas and yellow

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4
Q

Chlorine is which state and which colour

A

Gas and green

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5
Q

Bromine is which state and which colour

A

Liquid and red with a brown vapour

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6
Q

Iodine is which state with which colour

A

Solid and dark grey with a purple vapour

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7
Q

Halogens need to be handled in…

A

A fume cupboard

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8
Q

Astatine is…

A

Solid and radioactive

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9
Q

Down the halogens the MP and BP … And the colour gets

A

Increase and the colour gets darker

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10
Q

Halogens react with hydrogen to form

A

Hydrogen halides

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11
Q

Hydrogen halides are…

A

Steamy, poisonous and acidic gases

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12
Q

Hydrogen halides are… In water

A

Very soluble

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13
Q

Hydrogen halides react with water to produce

A

Solutions of acids (making H+ ions)

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14
Q

Hydrogen halides are not … As gases

A

Acidic

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15
Q

When hydrogen halides are dissolved in organic solvents there is…

A

No colour change

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16
Q

Halogens are … Reactive

A

Highly reactive as they only need to gain one electron

17
Q

Fluorine reacts with hydrogen with a…

A

Violent explosion, even in the cold or dark

18
Q

Chlorine reacts with hydrogen with a …

A

Violent explosion is exposed to a flame or sunlight

19
Q

Bromine reacts with hydrogen with a…

A

Mild explosion if a bromine vapour/hydrogen mixture is exposed to a flame

20
Q

Iodine reacts with hydrogen with a…

A

Partial reaction to form hydrogen iodide if vapour is heated continuously with hydrogen

21
Q

Sodium burns in chlorine to produce

A

The ionic white solid sodium chloride (salt)

22
Q

In the reaction between sodium and chlorine the sodium has been … And the chlorine has been … In a … Reaction

A

The sodium has been oxidised and the chlorine has been reduced in a redox reaction

23
Q

Equation for sodium and chlorine reaction

A

2Na(s) + Cl2(g) = 2NaCl(s)

24
Q

Halogens are … Reactive as you go down the group

A

Decreasingly

25
Q

Halogens can … Each other

A

Displace

26
Q

Iodine turns Volasil…

A

Pink

27
Q

Finding the reactivity of halogens is done by…

A

Reacting the elements with potassium halides (a colour change will indicate a reaction)

28
Q

Colour changes between halogens and potassium halides are due to…

A

The less reactive element being displaced

29
Q

In a reaction between halogens and potassium halides, potassium is…

A

A spectator ion

30
Q

In a displacement reaction with potassium iodide and either chlorine or bromine, you tell the difference between the two as…

A

Volasil (an organic solvent) is added and will turn iodine pink while bromine stays orange

31
Q

Displacement reactions with halogens are … Reactions

A

Redox

32
Q

Reaction between Potassium Chloride and Bromine?

A

Stays orange (no reaction)

33
Q

Reaction between potassium chloride and Iodine?

A

Stays brown (no reaction)

34
Q

Reaction between Potassium bromide and Chlorine?

A

Turns orange

35
Q

Reaction between potassium bromide and iodine?

A

Stays brown (no reaction)

36
Q

Potassium Iodide and chlorine reaction?

A

Turns brown

37
Q

Reaction between potassium iodide and bromine

A

Turns brown

Chemistry (18 decks)

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