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CHEMISTRY F4 > CH4 > Flashcards

CH4 Flashcards

1
Q

6 Elements of Group 18

A

Helium Neon Argon Krypton Xenon Radon

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2
Q

2 Other Names for Group 18

A

Noble Gas
Inert Gas

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3
Q

Why are -Elements of group 18- monoatomic gas?

A

Atoms have achieved stable duplet or octet electron arrangement
Atoms do not share, receive or donates electron with other atoms

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4
Q

Change in size of atomic radius / atomic size going down group 18

A

Number of electrons increase
Number of shell occupied with electron increases
Atomic size of atom increase

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5
Q

Change in melting/boiling point going down group 18

A

Size of atom increase
Forces of attraction between atoms become stronger
More heat energy is required to overcome forces of attraction
Melting/boiling point Increase

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6
Q

2 Uses of Helium

A

Used to fill weather baloons
Used in oxygen tanks of diver

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7
Q

Use of Neon

A

Used in advertising board light

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8
Q

2 Uses of Argon

A

used to fill in electric bulbs
used to provide an inert atmosphere for high temperature welding

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9
Q

2 Uses of Krypton

A

Used in Camera Flashlight
Used in Lasers for eye retina treatment

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10
Q

2 Uses of Xenon

A

Used in lighthouse lamps
Used for anesthesia

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11
Q

Use of Radon

A

Used to treat cancer

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12
Q

6 Elements of Group 1

A

Lithium Sodium Potassium Rubidium Caesium Francium

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13
Q

Another name for Group 1

A

Alkali Metals

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14
Q

Change in size of atom going down group 1

A

Number of electrons Increase
Number of shells filled with electron increases
Size of atom increase

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15
Q

Change in Melting/Boiling point going down group 1

A

Size of atom increases
Forces of attraction between atoms becomes weaker
Less heat energy is required to overcome forces of attraction
Melting/boiling Point decreases

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16
Q

Comparison of Boiling/Melting Point of Group 1 Compared to other metal

A

Lower melting/boiling point compared to other metals

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17
Q

4 Characteristics of Alkali Metals

A

Grey shiny surface at room temperature
Soft metals
Low Density
Float on water

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18
Q

Change in reactivity going down group 1

A

Size of atom increases
Distance between nucleus of atom and valence electron becomes further
Forces of attraction between nucleus and valence electron become weaker
Valence electron is easier to donate
Reactivity increase

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19
Q

Arrangement of Periodic Table Of Elements

A

ascending order of proton number

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20
Q

3 Properties of Caesium and Rubidium

A

Burns easily
Usually combined with other elements
difficult to be isolated chemically

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21
Q

Property of Francium

A

Unstable radioactive isotope with short half-life

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22
Q

Product of reaction between Alkali metals and Chlorine gas

A

White solid of Metal Chloride

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23
Q

Products of reaction between Alkali metals and Water

A

Alkaline Hydroxide solution and Hydrogen Gas

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24
Q

Product of reaction between Alkali metals and Oxygen gas

A

Metal oxide

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25
Q

Product of reaction between (Alkali) metal oxide and water

A

Alkaline Hydroxide solution

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26
Q

Use of Lithium

A

Used in battery production

27
Q

Uses of Sodium

A

Used in Sodium Vapour Lamps

28
Q

Use of Potassium

A

Used in fertilisers

29
Q

6 Elements of Group 17

A

Fluorine Chlorine Bromine Iodine Astatine Tenessine

30
Q

Other name for group 17

31
Q

Uses of Chlorine

A

Used as bleach

32
Q

Uses of bromine

A

Used as a substance in fire extinguisher

33
Q

Uses of Iodine

A

used as disinfectant

34
Q

Change of melting/boiling point going down group 17

A

Size of molecules increases
Forces of attraction between molecules increases
More heat energy is required to overcome forces of attraction between molecules
Boiling point/ Melting point Increases

35
Q

Chlorine at room temperature

A

Greenish-yellow gas

36
Q

Bromine at room temperature

A

Reddish brown liquid

37
Q

Iodine at room temperature

A

Purplish Black Solid

38
Q

Products of reaction between halogens and Water

A

Acidic Solution

39
Q

Products of reaction between halogens and metal

A

Metal Halide

40
Q

Products of reaction between halogens and alkaline solution

A

Metal halide, Metal halate and Water

41
Q

Change in reactivity going down group 17

A

Size of atom increases
Distance between nucleus and valence electron becomes further
Forces of attraction between nucleus and electrons becomes weaker
More difficult to receive electron
Lower Reactivity

42
Q

2 General Properties of Halogen

A

Soluble in organic solvent
Does not conduct heat nor electricity

43
Q

3 Properties of Fluorine Gas

A

light yellow poisonous gas
very reactive and corrosive
Cause a strong explosion when combined with Hydrogen Gas

44
Q

2 Properties of Astatine

A

rare radioactive element
not chemically stable

45
Q

8 Elements of period 3

A

Sodium Magnesium
Aluminium Silicon
Phosphorus Sulphur
Chlorine Argon

46
Q

Use of Magnesium

A

as a substance in lighter

47
Q

Use of aluminum

A

as a substance in can

48
Q

Use of Phosphorus

A

as a substance in firework

49
Q

Use of silicon

A

as fungicides

50
Q

Change in atomic size across period 3

A

Number of proton in the nucleus of the atom increase
Charge of atom’s nucleus increase
Forces of attraction between nucleus and valence electrons becomes stronger
Distance between Valence electron and nucleus becomes shorter
Size of atom becomes smaller

51
Q

Change in Electronegativity across period 3

A

Number of proton in the nucleus of the atom increase
Charge of atom’s nucleus increase
Forces of attraction between nucleus and electrons becomes stronger
Ability of atom to receive
electron increase
atom easier to receive electrons
electronegativity increase

52
Q

Metals Of Period 3

A

Sodium Magnesium Aluminium

53
Q

Metalloid / Semi-metals of period 3

54
Q

Non metals of period 3

A

Phosphorus
Sulphur
Chlorine
Argon

55
Q

Basic oxide of period 3

A

Sodium Oxide
Magnesium Oxide

56
Q

Amphoteric Oxide of Period 3

A

Aluminium Oxide

57
Q

Acidic Oxide of Period 3

A

Silicon Oxide
Phosporus Oxide
Chlorine OXide

58
Q

Properties of Amphoteric oxide

A

React with both acid and alkaline to produce water and salt only

59
Q

Properties of Semi-metal

A

Have both properties of metal and non-metal
Weak conductor of electricity

60
Q

Uses of semi-metal

A

Used as semiconductor in electronic microchip manufacture

61
Q

6 Physical properties of transition Metals

A

Solid with shiny surface
malleable
ductile
high melting and boiling point
high density
Very hard compared to metal of group 1 & 2`

62
Q

4 Special Characteristics of Transition elements

A

form coloured ions or compound
act as a catalyst that increase rate of reaction without change in chemical properties at the end of the reaction
form complex ions
have more than one oxidation number

63
Q

4 Transition Elements used in industries

A
  • Iron-Haber Process-Ammonia
  • Platinum-Ostwald Process-Nitric Acid
  • Vanadium (v) Oxide-Contact process-Sulphuric Acid
  • Nickel or Platinum-Hydrogenation process on veggie oils-Margarine
64
Q

Uses of
1. Manganese
2. Iron
3. Titanium

A
  1. Stained glass windows
  2. bridges
  3. Titanium

CHEMISTRY F4 (6 decks)

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