01. For each of the
following items, choose the most correct answer from the given alternatives and
write its letter beside the item number in your answer sheet.
i)
A homogeneous mixture of two or more substances in
which one of the substances is a solvent is a solvent and the other is solute
is:
A. A suspension
B. Emulsion
C. A solution
D. A compound
ii)
The solution that temporarily holds more solute than
the saturated solution at a given temperature is:
A. Unsaturated
solution
B. A saturated
solution
C. A super saturated
solution
D. A standard
solution
iii) A heterogeneous
mixture of a liquid and fine particles of solid in which the solid does not
dissolve but suspended in the liquid is:
A. A suspension
B. A miscible liquid
C. Immiscible liquid
D. Emulsion
iv)
The difference between miscible liquid and
immiscible liquids is that:
A. Immiscible
liquids form separated layers while miscible liquids do not
B. Immiscible
liquids contain more liquid than miscible liquids
C. Immiscible
liquids mix while the miscible liquids do not
D. Immiscible
liquids do not flow while miscible liquids flow
v)
The process of separating a heterogeneous mixture of
liquid and a solid or solids by pouring out of the liquid only and leaving the
solid at the bottom of the container is:
A. Evaporation
B. Decantation
C. Distillation
D. Filtration
Answers:
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I
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ii
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iii
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iv
|
v
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|
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02. Define the
following terms
i.
Element
ii.
Compound
iii. Mixture
iv.
Solvent
v.
Solute
03. (a) Give the
differences between a compound and mixture
(b)Give the differences
between solution and suspension
04. Mention any four
(4) uses of solvents
05. For each of the
following mixtures, state whether is miscible or immiscible liquids
i.
Mixture of kerosene with water
ii.
Mixture of oil with water
iii. Mixture of
alcohol with water
iv.
Drops of coloured oils in water
v.
Mixture of milk with water.
06. Name the process
that can be used to separate the following substances:
i.
Iodine and sand
ii.
Kerosene and water
iii. A mixture of
petrol and diesel
iv.
A mixture of sulphur and iron fillings
v.
Oil from seed
06. ELEMENTS, COMPOUNDS AND MIXTURE
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