AQA GCSE Chemistry - Paper 1 ACTUAL FINAL EXAM
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What is the charge of a proton?
+1
What is the charge of a neutron?
0
What is the charge of an electron?
-1
What is the relative mass of a proton?
1
What is the relative mass of a neutron?
1
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What is the relative mass of an electron?
Very small
How many types of atoms do elements contain?
Only one type
What are compounds?
Substances containing two or more different elements that are
chemically bonded together
What are mixtures?
Substances containing two or more different elements that are not
chemically bonded together
What pattern is formed from carrying out paper chromatography?
Chromatogram
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Which method of separation is useful to separate an insoluble solid
from a liquid?
Filtration
Which method of separation is useful to separate a soluble solid from a
liquid?
Evaporation or Crystillisation
Which method of distillation separates liquids with similar boiling points?
Fractional distillation
Who discovered that the plum pudding model was wrong?
Ernest Rutherford
Who devised an experiment that proved the existence of the neutron?
Niels Bohr
Why did Mendeleev leave gaps in his Table of Elements?
To ensure that elements with similar properties stayed in the same
groups. The gaps indicated the existence of undiscovered elements and
allowed Mendeleev to predict what their properties might be
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How are the group number and the number of electrons in the outer shell
of an element related?
The group number tells you how many electrons are in the outer shell of
an element. E.g. sodium is in Group 1 therefore it has 1 electron on its outer
shell
What kind of ions do metals form?
Positive
Where are the non-metals on the periodic table?
On the right hand side
Give three properties which are specific to transition metals
1) They can form more than one ion e.g cobalt form Co2+
2) They are often coloured, therefore compounds which contain
them are colourful e.g. potassium chromate is yellow
3) They often make good catalysts e.g. nickel based catalysts are
used in the hydrogenation of alkenes
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