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Chemistry Unit 3 > Specific Groups > Flashcards

Specific Groups Flashcards

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0
Q

What is the name for group 1?

A

Alkali Metals

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1
Q

What happens the further down the Alkali Metals you go?

A
  • They become more reactive
  • Lower melting points
  • Lower boiling points
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2
Q

What kind of density do alkali metals have?

A

Low density

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3
Q

Why are alkali metals all very reactive?

A

Because they have one electron in their outer shell so they are eager to lose it

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4
Q

How to alkali metals bond?

A

Ionically

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5
Q

What do alkali metals produce which can be dissolved in water? What happens when this IS dissolved in water?

A
  • White compounds

- Form a colourless solution

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6
Q

What happens when lithium, sodium or potassium are put in water?

A
  • They react vigorously (fizz)
  • They produce hydrogen
  • They form hydroxides that dissolve in water to give alkaline solutions
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7
Q

What is the name of group 7 elements?

A

Halogens

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8
Q

What happens as you go down the halogens?

A
  • They get less reactive
  • Higher melting points
  • Higher boiling points
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9
Q

Which group has non-metals with coloured vapours?

A

Halogens

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10
Q

What element is a very reactive, poisonous, yellow gas?

A

Fluorine

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11
Q

What element is a fairly reactive, poisonous, dense green gas?

A

Chlorine

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12
Q

What element is a dense, poisonous, red brown, volatile liquid?

A

Bromine

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13
Q

What element is a dark grey, crystalline solid or a purple vapour?

A

Iodine

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14
Q

What ions do halogens form when they bond with metals and what are they called?

A
  • Negative 1

- Halides

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15
Q

What kind of bonds do halogens form?

A

Ionic

16
Q

What will a more reactive halogen do to a less reactive halogen in a salt solution?

A

Displaces it

17
Q

What is the big clump of metals in the middle of the table called?

A

Transition elements

18
Q

What are the properties of a transition element? (4)

A
  • Good conductors
  • Dense, strong, shiny
  • Less reactive than group 1
  • Higher melting points that group 1 (apart from Mercury)
19
Q

What do the different ions of transition elements form?

A

Coloured compounds

20
Q

What does an Fe2+ iron form?

A

Green compounds

21
Q

What do Fe3+ ions form?

A

Red/brown compounds

22
Q

What colour is potassium chromate?

A

Yellow

23
Q

What colour is potassium manganate?

A

Purple

24
Q

What colour is copper (||) sulphate?

A

Blue

25
Q

What group makes good catalysts?

A

Transition metals (and their compounds)

Chemistry Unit 3 (3 decks)

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