PMT
For Examiner’s Use
Centre Number Candidate Number
Surname
Other Names
Examiner’s Initials
Candidate Signature
Question Mark
General Certificate of Education
1
Advanced Subsidiary Examination
January 2010 2
3
Chemistry CHEM1 4
Unit 1 Foundation Chemistry 5
6
Thursday 14 January 2010 9.00 am to 10.15 am
TOTAL
For this paper you must have:
● the Periodic Table/Data Sheet, provided as an insert
(enclosed)
● a calculator.
Time allowed
● 1 hour 15 minutes
Instructions
● Use black ink or black ball-point pen.
● Fill in the boxes at the top of this page.
● Answer all questions.
● You must answer the questions in the spaces provided. Answers
written in margins or on blank pages will not be marked.
● All working must be shown.
● Do all rough work in this book. Cross through any work you do not
want to be marked.
Information
● The marks for questions are shown in brackets.
● The maximum mark for this paper is 70.
● The Periodic Table/Data Sheet is provided as an insert.
● Your answers to the questions in Section B should be written in
continuous prose, where appropriate.
● You will be marked on your ability to:
– use good English
– organise information clearly
– use accurate scientific terminology.
Advice
● You are advised to spend about 50 minutes on Section A and about
25 minutes on Section B.
(JAN10CHEM101) CHEM1
WMP/Jan10/CHEM1
, PMT
2 Areas outside
the box will
not be scanned
for marking
SECTION A
Answer all questions in the spaces provided.
1 Ionisation energies provide evidence for the arrangement of electrons in atoms.
1 (a) Complete the electron configuration of the Mg+ ion.
1s2 ......................................................................................................................................
(1 mark)
1 (b) (i) State the meaning of the term first ionisation energy.
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
(2 marks)
1 (b) (ii) Write an equation, including state symbols, to show the reaction that occurs
when the second ionisation energy of magnesium is measured.
...................................................................................................................................
(1 mark)
1 (b) (iii) Explain why the second ionisation energy of magnesium is greater than the first
ionisation energy of magnesium.
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
(1 mark)
1 (b) (iv) Use your understanding of electron arrangement to complete the table by
suggesting a value for the third ionisation energy of magnesium.
First Second Third Fourth Fifth
Ionisation energies of
736 1450 10 500 13 629
magnesium / kJ mol –1
(1 mark)
(02)
WMP/Jan10/CHEM1
, PMT
3 Areas outside
the box will
not be scanned
for marking
1 (c) State and explain the general trend in the first ionisation energies of the Period 3
elements sodium to chlorine.
Trend ..................................................................................................................................
Explanation ........................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(3 marks)
(Extra space) ......................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
1 (d) State how the element sulfur deviates from the general trend in first ionisation energies
across Period 3. Explain your answer.
How sulfur deviates from the trend ...................................................................................
.............................................................................................................................................
Explanation ........................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(3 marks)
(Extra space) ......................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
1 (e) A general trend exists in the first ionisation energies of the Period 2 elements lithium
to fluorine. Identify one element which deviates from this general trend.
.............................................................................................................................................
(1 mark)
13
Turn over
(03)
WMP/Jan10/CHEM1
For Examiner’s Use
Centre Number Candidate Number
Surname
Other Names
Examiner’s Initials
Candidate Signature
Question Mark
General Certificate of Education
1
Advanced Subsidiary Examination
January 2010 2
3
Chemistry CHEM1 4
Unit 1 Foundation Chemistry 5
6
Thursday 14 January 2010 9.00 am to 10.15 am
TOTAL
For this paper you must have:
● the Periodic Table/Data Sheet, provided as an insert
(enclosed)
● a calculator.
Time allowed
● 1 hour 15 minutes
Instructions
● Use black ink or black ball-point pen.
● Fill in the boxes at the top of this page.
● Answer all questions.
● You must answer the questions in the spaces provided. Answers
written in margins or on blank pages will not be marked.
● All working must be shown.
● Do all rough work in this book. Cross through any work you do not
want to be marked.
Information
● The marks for questions are shown in brackets.
● The maximum mark for this paper is 70.
● The Periodic Table/Data Sheet is provided as an insert.
● Your answers to the questions in Section B should be written in
continuous prose, where appropriate.
● You will be marked on your ability to:
– use good English
– organise information clearly
– use accurate scientific terminology.
Advice
● You are advised to spend about 50 minutes on Section A and about
25 minutes on Section B.
(JAN10CHEM101) CHEM1
WMP/Jan10/CHEM1
, PMT
2 Areas outside
the box will
not be scanned
for marking
SECTION A
Answer all questions in the spaces provided.
1 Ionisation energies provide evidence for the arrangement of electrons in atoms.
1 (a) Complete the electron configuration of the Mg+ ion.
1s2 ......................................................................................................................................
(1 mark)
1 (b) (i) State the meaning of the term first ionisation energy.
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
(2 marks)
1 (b) (ii) Write an equation, including state symbols, to show the reaction that occurs
when the second ionisation energy of magnesium is measured.
...................................................................................................................................
(1 mark)
1 (b) (iii) Explain why the second ionisation energy of magnesium is greater than the first
ionisation energy of magnesium.
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
(1 mark)
1 (b) (iv) Use your understanding of electron arrangement to complete the table by
suggesting a value for the third ionisation energy of magnesium.
First Second Third Fourth Fifth
Ionisation energies of
736 1450 10 500 13 629
magnesium / kJ mol –1
(1 mark)
(02)
WMP/Jan10/CHEM1
, PMT
3 Areas outside
the box will
not be scanned
for marking
1 (c) State and explain the general trend in the first ionisation energies of the Period 3
elements sodium to chlorine.
Trend ..................................................................................................................................
Explanation ........................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(3 marks)
(Extra space) ......................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
1 (d) State how the element sulfur deviates from the general trend in first ionisation energies
across Period 3. Explain your answer.
How sulfur deviates from the trend ...................................................................................
.............................................................................................................................................
Explanation ........................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(3 marks)
(Extra space) ......................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
1 (e) A general trend exists in the first ionisation energies of the Period 2 elements lithium
to fluorine. Identify one element which deviates from this general trend.
.............................................................................................................................................
(1 mark)
13
Turn over
(03)
WMP/Jan10/CHEM1
