A competition to select the team to represent the
UNITED KINGDOM
at the
XXXVth INTERNATIONAL CHEMISTRY
OLYMPIAD
STUDENT QUESTION BOOKLET
Round I - 2003
* * * * *
The time allowed is 2 hours.
Attempt all 8 questions.
Write your answers in the special answer booklet.
In your calculations, please write only the essential steps in
the answer booklet.
Always give the appropriate units and number of significant
figures.
You are provided with a copy of the Periodic Table.
Do NOT write anything in the right hand margin of the
answer booklet.
Some of the questions will contain material you will not be familiar with. However,
by logically applying the skills you have learnt as a chemist, you should be able to
work through the problems. There are different ways to approach the tasks – even
if you cannot complete certain parts of a question, you may still find subsequent
parts straightforward.
, H He
1 2
1.008 4.003
Li Be symbol B C N O F Ne
3 4 atomic number 5 6 7 8 9 10
6.94 9.01 mean atomic mass 10.81 12.01 14.01 16.00 19.00 20.18
Na Mg Al Si P S Cl Ar
11 12 13 14 15 16 17 18
22.99 24.31 26.98 28.09 30.97 32.06 35.45 39.95
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
39.102 40.08 44.96 47.90 50.94 52.00 54.94 55.85 58.93 58.71 63.55 65.37 69.72 72.59 74.92 78.96 79.904 83.80
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
85.47 87.62 88.91 91.22 92.91 95.94 101.07 102.91 106.4 107.87 112.40 114.82 118.69 121.75 127.60 126.90 131.30
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
132.91 137.34 138.91 178.49 180.95 183.85 186.2 190.2 192.2 195.09 196.97 200.59 204.37 207.2 208.98
Fr Ra Ac+
87 88 89
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
*Lanthanides 58 59 60 61 62 63 64 65 66 67 68 69 70 71
140.12 140.91 144.24 150.4 151.96 157.25 158.93 162.50 164.93 167.26 168.93 173.04 174.97
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
+Actinides
90 91 92 93 94 95 96 97 98 99 100 101 102 103
232.01 238.03
UNITED KINGDOM
at the
XXXVth INTERNATIONAL CHEMISTRY
OLYMPIAD
STUDENT QUESTION BOOKLET
Round I - 2003
* * * * *
The time allowed is 2 hours.
Attempt all 8 questions.
Write your answers in the special answer booklet.
In your calculations, please write only the essential steps in
the answer booklet.
Always give the appropriate units and number of significant
figures.
You are provided with a copy of the Periodic Table.
Do NOT write anything in the right hand margin of the
answer booklet.
Some of the questions will contain material you will not be familiar with. However,
by logically applying the skills you have learnt as a chemist, you should be able to
work through the problems. There are different ways to approach the tasks – even
if you cannot complete certain parts of a question, you may still find subsequent
parts straightforward.
, H He
1 2
1.008 4.003
Li Be symbol B C N O F Ne
3 4 atomic number 5 6 7 8 9 10
6.94 9.01 mean atomic mass 10.81 12.01 14.01 16.00 19.00 20.18
Na Mg Al Si P S Cl Ar
11 12 13 14 15 16 17 18
22.99 24.31 26.98 28.09 30.97 32.06 35.45 39.95
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
39.102 40.08 44.96 47.90 50.94 52.00 54.94 55.85 58.93 58.71 63.55 65.37 69.72 72.59 74.92 78.96 79.904 83.80
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
85.47 87.62 88.91 91.22 92.91 95.94 101.07 102.91 106.4 107.87 112.40 114.82 118.69 121.75 127.60 126.90 131.30
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
132.91 137.34 138.91 178.49 180.95 183.85 186.2 190.2 192.2 195.09 196.97 200.59 204.37 207.2 208.98
Fr Ra Ac+
87 88 89
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
*Lanthanides 58 59 60 61 62 63 64 65 66 67 68 69 70 71
140.12 140.91 144.24 150.4 151.96 157.25 158.93 162.50 164.93 167.26 168.93 173.04 174.97
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
+Actinides
90 91 92 93 94 95 96 97 98 99 100 101 102 103
232.01 238.03
