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WorksheetsGroup 14 STPM
Total questions: 15
Worksheet time: 30mins
Which property increases when going down Group 14 of the periodic table?
Boiling point of the elements
Acidic property of oxides
Covalent chaacter of chlorides
Stability of +2 oxidation state
Which of the following oxides of Group 14 elements is the least thermally stable?
CO2
SiO2
SnO2
PbO2
Which statement is true?
Their monoxides are acidic.
Their +2 oxidation state is more stable than +4 oxidation state.
The exist as giant covalent molecules
Their dioxide can liberate chlorine when heated with concentrated HCl
A thermally stable liquid, MCl4 can react with water to form acidic solution. Which statement about the oxides of M is true?
MO2 is ionic.
MO2 is acidic.
MO2 is reducing agent.
MO is more stable than MO2.
Which of the following represent this stucture?
Asbestos
Mica
Zircon
Talc
Which of the following statement is no true about lead(IV) chloride?
It is less thermal stable
It decomposes to lead(II) chloride and chlorine when heated
It has higher boiling point than lead(II) chloride
It produce white fumes when reacts with water
Which of the following statements about carbon is not correct?
All carbon compounds are covalent.
The most stable oxidation state of carbon is +4.
Carbon has simple covalent structure.
Diamond is an allotrope of carbon.
Silicon(IV) oxide
is an ionic compound with strong electrostatic force
has weak van der Waals forces between molecules
has giant layered structure
has high lattice energy
Monoxides and dioxides of Group 14 elements in the Periodic Table show different acid-base properties. Which is an acidic oxide?
GeO
PbO
SiO2
SnO2
Which element are neutral?
GeO
PbO
SiO
CO
The characteristic of tetrachlorides in Group 14 except?
Liquid
Simple covalent bond
Thermal stability decrease down the group
CCl4 can be hydrolysis
Zeolite is a type of aluminosilicate. Which statement about the uses of zeolite is not true?
As a dehydration agent in the petrochemical reaction
As ion exhcnage resin in the softnening of water
As a superconductor in electronic chip
As a petroleum refining
Which element is found in both solder and pewter?
Carbon
Tin
Chromium
Lead
Which of the following chlorides fumes in moist air?
PbCl2
SnCl2
CCl4
PbCl4
Silicone is a semiconductor. The eletrical conductivity of silicone can be increased by
doping with boron
doping with phosphorus
doping with sulphur
increase temperature
