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WorksheetsChapter 09 S-P of substances (Ch_Exercise+)
Total questions: 10
Worksheet time: 9mins
Which of the following statements concerning iodine is/are correct?
(1) It consists of diatomic molecules.
(2) It has a low boiling point because iodine atoms are held together by covalent bond.
(3) It has a giant covalent structure.
(1) only
(2) only
(1) and (3) only
(2) and (3) only
Which of the following statements concerning the substances with a giant covalent structure are correct?
(1) They have high melting points.
(2) They can conduct electricity when molten.
(3) They are insoluble in water but soluble in non-aqueous solvents.
(1) only
(2) only
(1) and (3) only
(2) and (3) only
Which of the following substances has a giant ionic structure?
SiO2
SO2
HgO
NO
The diagram below shows the structure of an
ionic compound formed from the reaction
between metal M (black spot) and non-metal X.
The formula of this compound should be
M2X3
MX
MX2
M2X
X has a melting point of 2566°C. It can conduct
electricity when molten but not in the solid state. X
is insoluble in water.
is malleable.
is probably an ionic compound.
consists of separate molecules.
Caesium (Cs) is in the same group as sodium in the Periodic Table. Which of the following predictions of the properties of caesium is INCORRECT?
The formula of its chloride is CsCl.
It reacts vigorously with water.
Its chloride is soluble in water.
It decomposes when conducting electricity.
Which of the following statements concerning iodine is correct?
Iodine exists as discrete molecules.
Iodine lattice has a giant covalent structure.
Iodine molecules are held together by covalent bonds.
Iodine is a liquid at room temperature and pressure.
Which of the following types of bonds are present in ammonium chloride?
(1) Ionic bond
(2) Covalent bond
(3) Dative covalent bond
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following substances CANNOT conduct electricity?
Pt(s)
PbBr2(l)
C(graphite)
CH3CH2OH(l)
Silicon and carbon react to form silicon carbide. The crystal structure of silicon carbide is similar to that of diamond. Silicon carbide is very hard because
it has a high melting point.
silicon atoms and carbon atoms form triple bonds.
it has a giant network structure with strong covalent bonds.
both silicon and carbon atoms have four outermost shell electrons.
