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Flashcards in Periodic Table Deck (52):
0

Group

Outer shell electron

1

Periodicity

Number of shells

2

Group 1 name

Alkali metals

3

Group 2 name

Alkali earth metals

4

Group 7

Halogens

5

Group 8 other name

Noble gasses

6

5 metal properties

Conducts electricity
Metal oxides are bases
Shiny
High mp/bp
Malleable

7

5 non-metal properties

Don't conduct electricity
Non-metal oxides are acidic
Dull
Low mp/bp
Not malleable

8

3 properties of noble gases

Inert
Colourless
Monatomic gases

9

Uses of Nobel gases

Helium used in balloons as denser than air
Neon used in advertising signs as glows when electricity is passed through it
Argon used in builds as very unreactive even at high temp so won't react with the thin metal filament like O2 would
Krypton used in lasers

10

Properties of alkali metals (6)

Shiny
Conduct electricity
Soft
Low mp/bp
Low density
React with water

11

Lithium + water = (and observations)

Lithium hydroxide + hydrogen
Float, move, fizz

12

Sodium + water = (and observations)

Sodium hydroxide + hydrogen
Float, move, fizz, melt

13

Potassium + water = (and observations)

Potassium hydroxide + hydrogen
Float, move, lilac flame, violent reaction, fizz

14

Water + alkali metals turns universal indicator...

Purple (alkali)

15

Rubidium + water = (and observations)

Rubidium hydroxide + hydrogen
Sinks as denser than water
Immediately reacts with a violent exposition

16

Caesium + water = (and observations)

Caesium hydroxide + hydrogen
Explodes shattering container

17

Ions group 1 forms

1+

18

Explaining trend in group 1 reactivity

Reactivity increases as you go down the group
As you go down the group:
Number of shells increase
Outer electrons further from nucleus
Less strongly attracted
Therefore atom can give up its electrons more easily

19

What happens to melting point as you go down group 1

Melting point decreases

20

Fluorine state, colour, use

Gas
Colourless / pale yellow
F– used in toothpaste

21

Chlorine state, colour, use

Gas, pale green, disinfectant

22

Bromine state, colour, use

Liquid, red/brown, water purification

23

Iodine state, colour, use

Solid, silver/black, anti-septic

24

Astatine state, colour, use

Solid, black, radioactive isotope

25

Halogen ending, halide ending

ine, ide

26

Chlorine water aqueous layer

Colourless

27

Bromine water aqueous layer

Orange

28

Iodine water colour of aqueous layer

Red/brown

29

Explaining reactivity in group 7

Reactivity decreases as you go down the group
As you go down the group:
Number of shells increase
Outer shell electrons further from nucleus
This means they are less strongly attracted to the nucleus
Therefore it is more difficult to attract the extra electron into its outer shell

30

As you go down group 7

Mp increases
Density increases

31

How to determine percentage of oxygen in air

Passing air in syringe over hot copper turnings

Starting volume - final volume
----------------------------------- x 100
Starting volume

32

Making and collecting oxygen

Hydrogen peroxide----------------> water + oxygen
Catalyst

H2O2.

33

Catalyst in making oxygen

Manganese 4 oxide

34

Percentage of nitrogen in air

78%

35

Percentage of oxygen in air

21%

36

Percentage of argon in air

Almost 1%

37

Percentage of carbon dioxide in air

0.04%

38

Magnesium burnt in oxygen

Bright white light
White solid
pH 10

39

Carbon burnt in oxygen

Orange flame and sparks
Colourless gas
pH5

40

Soulful burnt in oxygen

Melted then burned with a blue flame
Colourless gas
pH1

41

Metal oxides are...

Bases

42

Non-metal oxides are...

Acids

43

Preparation of carbon dioxide

Metal carbonate + acid
CaCO3 + HCl ---> CO2 + H2O + CaCl2

44

How to collect CO2

Over water

45

Uses of CO2

Fizzy drinks
Fire extinguisher

46

Use of oxygen

O2 cylinders

47

Preparation of hydrogen

Metal + acid
Mg + 2HCl ---> MgCl2 + H2

48

Uses of hydrogen

Balloons
Fuel

49

Metal acid------>

Metal salt + hydrogen

50

Rust equation

Fe2O3•XH2O

51

3 ways to prevent rusting

Barrier method
Alloying
Sacrificial protection with a more reactive metal