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YEAR 11 Chemistry Topic Test Assessment
2006 20%
Name: __________________
1. Briefly describe an experiment you carried out to separate a
dissolved solid from its solution.
4 marks
Name the: solution: _______________ solute:______________
solvent: _________________
Aim:_______________________________________________________________________
Method:
____________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________Diagram
(labeled):
2.Water of crystallization in a compound can be removed by
heating the compound in a
crucible. Determine the percentage of water of crystallization
in a compound using the
following experimental results: Mass of empty crucible: 23.64g;
mass of crucible plus
compound: 27.72g; mass of crucible plus compound after heating:
26.56g. 2 marks
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
3.a) Explain the difference between boiling and electrolysis of
water in terms of chemical and
physical change. 1 mark
___________________________________________________________________________
___________________________________________________________________________
b) Describe the process of electrolysis as evidence that water
is a compound. 2 marks
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
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4.Place the following elements in a table to show whether they
belong to metals, non-metals
and semi-metals: selenium, zirconium, osmium, germanium,
rubidium, xenon and
antinomy.
3 marks
5.Complete the table: 3 marks
Name Formula Metallic, Ionic or
Covalent
Solid, Liquid or
Gas
Sodium Fluoride
CH4
Sulpher Trioxide
CaCO3
Iron (III) hydroxide
Hg
6.Draw Lewis electron dot diagrams to show the bonding structure
in: 3marksa) water, H2O b) oxygen, O2 c) ethane, C2H6
7.Show the formation of ions in terms of gaining or losing
electrons (use half equations) by
the following substances: 2 marks
a) Ca ________________________________________________b) F
________________________________________________
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8.The table below gives the melting points of the chlorides of
seven consecutive elements A to G in
aperiod of the Periodic Table.Element A B C D E F G
Melting point of chloride (C) 801 712 193 -68 -91 -80 -101
(a) Give one element, A to G, which could be a
metal._________________________ 1 mark
(b) Name the type of banding which would exist in the chlorides
of elements A and B. 1 mark
_____________________________________________________________________________
(c) Explain, in terms of the bonding, the low melting points of
the chlorides of elements D to G.
1 mark
_______________________________________________________________________________
_______________________________________________________________________________
9.2.1 g solid calcium metal reacts with excess dilute
hydrochloric acid to give calcium chloridesolution and hydrogen
gas.
(a) Write down the ionic equation for the reaction. 1 mark
_______________________________________________________________________________
_______________________________________________________________________________
(b) Calculate the moles of calcium used. 1 mark
_______________________________________________________________________________
_______________________________________________________________________________
(c) How many moles of hydrogen gas were produced? 1 mark
_______________________________________________________________________________
_______________________________________________________________________________
(d) Determine the volume of this hydrogen gas at 25C 1 mark
_______________________________________________________________________________
_______________________________________________________________________________
10.A molecule of a certain gaseous oxide of nitrogen can be
represented by the formula NxOy.
In a series of experiments, various volumes of NxOy gas were
decomposed into nitrogen gas (N2)
and oxygen gas (O2). The table shows the results of the
experiments. All volumes were measured atthe same temperature and
pressure.
ExperimentVolume of NxOv gas
decomposed (L)
Volume of nitrogen
gas produced (L)
Volume of oxygen gas
produced (L)
1 6.0 6.0 3.0
2 1.0 1.0 0.50
3 0.40 0.40 0.20
(a) Show how these results agree with Gay-Lussac's Law. 2
mark
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
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(b) Use the results from any one of the three experiments to
determine the molecular formula of
this oxide of nitrogen. Show your reasoning. 2 marks.
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
11.Methane burns according to the following reaction:
( ) ( ) ( ) ( )g2224 OH2COO2CH ++ ggg
(a) Determine the volume of 32.0 g methane at 25 C and 100kPa 1
marks
_____________________________________________________________________________
_____________________________________________________________________________
(b) If 32.0 g methane and 2.0 moles oxygen are reacted, not all
of the gases are used up.
Determine which one will be left over, and the mass of carbon
dioxide produced. 4 marks
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
12.Identify why there are more metals available for people to
use now than there were 200 years
ago. 2 marks
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
13.Explain why ores are non-renewable resources. 2marks
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
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1. Solution: Salt Water
Solute: Salt
Solvent: Water
Aim: To separate salt from salt water.
Method: Heat the salt water until all the water has evaporated
leaving behind only
the salt.Diagram:
2. 28.43%
7. a) + + 22 CaeCa
b) + FeF
8. a) A b) Ionic
9.a) 222 HCaHCa ++ ++
b) 0.052 moles
c) 0.052 moles
d) 1.300L11.a) 49.45L
