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Edexcel GCE In Chemistry (8CH0) Paper 01 : Core Inorganic and Physical Chemistry JUNE 2023
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Edexcel GCE In Chemistry (8CH0) Paper 01 : Core Inorganic and Physical Chemistry JUNE 2023
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Pearson EdexcelGCE In Chemistry
[Date]
(8CH0) Paper 01
: Core Inorganic and Physical
Chemistry
[Author name]
[COMPANY NAME]
,Instructions
•Use black ink or ball-point pen.
•Fill in theis used
If pencil for diagrams/sketches/graphs it must be dark (HB or B).
•name, centreboxes at the top of this page with your
number and candidate number.
• Answer all
• Answer the questions in the spaces
provided – there may be more space
than you need.
questions.
Information
•The total mark for this paper is 80.
•– usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
•awardedquestion
For the marked with an asterisk (*), marks will be
for your ability to structure your answer logically,
showing the points that you make are related or follow on from
• each other where appropriate.
A Periodic Table is printed on the back cover of this paper.
Advice
•Read each question carefully before you start to answer it.
•whereallappropriate.
Show your working in calculations and include units
•the end. Check your answers if you have time at
Turn over
, Answer ALL questions.
Some questions must be answered with a cross in a box . If
you change your mind about an answer, put a line through the box
and then mark your new answer with a
cross .
1 Atoms of silicon contain protons, neutrons and electrons.
(a) Which are the correct data for a proton and a neutron?
(1)
Proton Neutron
Relative Relative mass Relative Relative mass
charge charge
A
+1 1 –1 0.0005
+1 1 0 1
B
–1 0.0005 0 1
0 1 +1 1
C
D
(b) (i) State the shape of the 2s orbital of a
silicon atom. (1)
............................................................................................................................... ................................................................................
............................................... ......................
(ii) State the difference between the two subatomic particles in
the 2s orbital. (1)
............................................................................................................................... ................................................................................
............................................... ......................
2
, (c) Silicon has three stable isotopes.
A sample of silicon was found to have a relative atomic mass, Ar ,
of 28.11 due to the presence of only the three stable isotopes.
The abundance for two of the isotopes is given in the table.
Isotope Abundance /
%
28
Si 92.2
30
Si 3.1
Determine the relative isotopic mass of the third
stable isotope. You must show your working.
(2)
(d) Give the symbol, including the mass number and atomic number,
for an atom of element X that has four fewer protons and three
fewer neutrons than an atom of 28Si.
1
4 (1)
............................................................................................................................... ................................................................................
............................................... ......................
(Total for Question 1 = 6
marks)
3
Turn
over
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