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Chemistry > Groups > Flashcards

Groups Flashcards

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1
Q

Group 1, reactions between lithium and water

A

Lithium + water => lithium hydroxide + hydrogen,

fizzing ( gas produced)

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2
Q

Group 1, reactions between potassium and water

A

Potassium + water => flame (purple), metal disappears,
fizzing ( gas produced ), flame

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3
Q

General equation for group 1

A

Metal + water => Metal + Hydrogen
Alkali . Hydroxide . Gas

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4
Q

Group 1, similarities between Rb and Cs ( reaction within water )

A

Flame and exposition

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5
Q

Period number

A

How many shells element has

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6
Q

Group number

A

How many electrons on the outer shell

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7
Q

Atomic mass

A

Protons + Neutrons

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8
Q

Group 1, Properties of alkali

A
  • soft metals
  • react quickly with water
  • lower melting points than typical
  • shiny when cut , dull quickly ( because react with oxygen)
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9
Q

Group 1, Conduct electricity and heat typical metals and alkali metals?

A

Yes

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10
Q

Diatomic is

A

goes in pairs

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11
Q

Group 1, when metal react with oxygen what produces?

A

Metal oxide

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12
Q

Group 1, test for hydrogen gas

A

Lit splint gives squeaky pop

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13
Q

Group 1, exam q: describe how segmentation is carried out

A
  • water into the tank
  • solid full to the bottom of the tank
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14
Q

Group 1, exam q: how you would separate pure water from salty water. How you prove it is pure water ?

A

! Use Distillation
- heat water
- boils at 100 degrees
- evaporates water
- salt left

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15
Q

Group 1, symbol for hydroxide

A

OH

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16
Q

Group 1, (fill the gap) the alkali metals get more reactive … the group

A

Down

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17
Q

Group 1, (fill the gap) the outer electron gets … … from the nucleus ( distance )

A

Further away

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18
Q

Group 0, colour at the room temperature

A

Colourless

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19
Q

Group 0, reactive / unreactive ?

A

Very unreactive

20
Q

Group 0, gases have … … electron shell and … need to gain, loose or share electrons.

A

Full outer, don’t

21
Q

Group 0, they do / do not react with each other

A

Don’t, because have full outer shell

22
Q

Group 0, they are …, they exist as individuals atoms, most atoms are …

A

Monoatomic, diatomic

23
Q

Group 0, density … down the group

A

Increases

24
Q

Group 0, helium uses

A

Filling Ballons

25
Q

Group 0, neon uses

A

Lasers

26
Q

Group 0, argon uses

A

Lightbulb

27
Q

Group 0, krypton uses

A

Fluorescent light

28
Q

Group 0, xenon uses

A

Bright light in lighthouses

29
Q

Group 0, Redon uses

A

Cancer therapy

30
Q

Group 7, fluorine: colour and state

A

Yellow, gas

31
Q

Group 7, chlorine: colour and state

A

Pale green, gas

32
Q

Group 7, bromine: colour and state

A

Brown, volatile liquid

33
Q

Group 7, iodine:colour and state

A

Dark grey, solid vapour purple

34
Q

Group 7, all halogens are …

A

Diatomic

35
Q

Group 7, properties of halogens

A
  • low melting and boiling points ( increases down the group)
  • poor conductor of heat and electricity
  • reactivity decreases down the group
36
Q

Group 7, hint to think

A
  • gain or lose
  • state outer shell
  • distance
  • easier / harder to attract to nucleus
37
Q

Group 7, react with metals to form ionic compounds called …

A

Salts

38
Q

Group 7, react with hydrogen to form hydrogen …

A

Halides

39
Q

Group 7, uses of halogens (sodium chloride)

A

Salt

40
Q

Group 7, uses of halogens (sodium fluoride)

A

Toothpaste

41
Q

Group 7, uses of halogens (sodium bromide)

A

Disinfectant

42
Q

Group 7, uses of halogens (sodium iodide)

A

Added to a table salt

43
Q

Displacement reaction =

A

More reactive displaces a less reactive element from its compound

Example =
Iron + carbon => Iron + Carbon
Oxide. Dioxide

44
Q

Group 7, atoms need to … electrons. If outer shell is closer to nucleus - there is … attraction between nucleus and extra electron, so electron is more … gained

A
  1. Gain
  2. Greater
  3. Easily
45
Q

Positive = groups:

Negative = groups:

A

Positive = groups: 1,2,3. = metals
( +1, +2, +3)
Negative = groups: 5,6,7. = non-metals
( -3,-2,-1)

Chemistry (7 decks)

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