as chemistry 2008 - richard challoner school · unit f324: rings, polymers and analysis ... •...
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AS Chemistry 2014
Course Structure
From September 2014 the AS GCE is made up of three
COMPULSORY units.
TWO of the units are externally assessed and ONE is
internally assessed.
Units
Unit F321: Atoms, Bonds and Groups • Atoms and reactions
• Electrons, bonding and structure
• The Periodic Table
Unit F322: Chains, Energy and Resources • Basic concepts and hydrocarbons
• Alcohols, halogenoalkanes and analysis
• Energy
• Resources
Unit F323: Practical Skills in Chemistry 1 • This AS (practical skills) unit is essentially coursework.
Unit 1 - F321 Module 1: Atoms and Reactions
• 1.1.1 Atoms
• 1.1.2 Moles and equations
• 1.1.3 Acids
• 1.1.4 Redox
Module 2: Electrons, Bonding and Structure
• 1.2.1 Electron structure
• 1.2.2 Bonding and structure
Module 3: The Periodic Table
• 1.3.1 Periodicity
• 1.3.2 Group 2
• 1.3.3 Group 7
Candidates are expected to apply knowledge, understanding and other skills gained in this unit to new situations and/or to solve related problems.
Unit 2 - F322 Module 1: Basic Concepts and Hydrocarbons
• 2.1.1 Basic Concepts
• 2.1.2 Alkanes • 2.1.3 Alkenes
Module 2: Alcohols, Halogenoalkanes and Analysis
• 2.2.1 Alcohols • 2.2.2 Halogenoalkanes
• 2.2.3 Modern Analytical Techniques
Module 3: Energy
• 2.3.1 Enthalpy Changes
• 2.3.2 Rates and Equilibrium
Module 4: Resources
• 2.4.1 Chemistry of the Air
• 2.4.2 Green Chemistry
Candidates are expected to apply knowledge, understanding and other skills gained in this unit to new situations and/or to solve related
problems.
Unit 3 – F323
Candidates are required to carry out three tasks:
1. Qualitative task [10 marks] eg making observations
2. Quantitative task [15 marks] eg doing calculations
3. Evaluative task [15 marks] – eg critical analysis / error analysis
The Coursework
AS Assessment
Unit 1 F321
30% of grade
One hour written exam structured paper 60 marks (90 UMS)
Unit 2 F322
50% of grade
One hour 45 minutes exam structured paper 100 marks (150
UMS)
Unit 3 F323
20% of grade
Coursework internal assessment 40 marks (60 UMS)
Exam board sets the task, teachers mark the work but it is
moderated.
Timing/Dates
F321 Unit 1 June 2015
F322 Unit 2 June 2015
F323 Unit 3 June 2015
General Features of Assessment
Knowledge and understanding
Applying knowledge and understanding
Evaluating scientific information
Practical techniques
Methods of analysis
Health and safety
A2 Chemistry 2015
Course Structure
From September 2015 the Advanced GCE is made up of three COMPULSORY units at AS and three further COMPULSORY units at A2.
Two of the AS and two of the A2 units are externally assessed.
The third AS unit F323 and the third A2 unit F326 are internally assessed and will include the assessment of practical skills.
Units
Unit F324: Rings, Polymers and Analysis • Rings, acids and amines
• Polymers and synthesis
• Analysis
Unit F325: Equilibria, Energetics and Elements • Rates, equilibrium and pH
• Energy
• Transition elements
Unit F326: Practical Skills in Chemistry 2 • This A2 (practical skills) unit is essentially coursework.
Unit 4 – F324 Module 1: Rings, Acids and Amines • 4.1.1 Arenes
• 4.1.2 Carbonyl Compounds
• 4.1.3 Carboxylic Acids and Esters
• 4.1.4 Amines
Module 2: Polymers and Synthesis • 4.2.1 Amino Acids and Proteins
• 4.2.2 Polyesters and Polyamides
• 4.2.3 Synthesis
Module 3: Analysis • 4.3.1 Chromatography
• 4.3.2 Spectroscopy
Candidates are expected to apply knowledge, understanding and other skills gained in this unit to new situations and/or to solve related problems.
Unit 5 – F325
Module 1: Rates, Equilibrium and pH • 5.1.1 How Fast?
• 5.1.2 How Far?
• 5.1.3 Acids, Bases and Buffers
Module 2: Energy • 5.2.1 Lattice Enthalpy
• 5.2.2 Enthalpy and Entropy
• 5.2.3 Electrode Potentials and Fuel Cells
Module 3: Transition Elements • 5.3.1 Transition Elements
Candidates are expected to apply knowledge, understanding and other skills gained in this unit to new situations and/or to solve related
problems.
Unit 6 – F326
Candidates are required to carry out three tasks:
1. Qualitative task [10 marks]; - eg observations
2. Quantitative task [15 marks]; - eg measurements
3. Evaluative task [15 marks]. – eg critical analysis / error analysis
A2 Assessment
A2 Unit 4 F324 15% of the total Advanced GCE marks. 1 hr written paper
60 marks Candidates answer all questions. (90 UMS)
This unit contains some synoptic and Stretch and Challenge questions.
A2 Unit 5 F325 25% of the total Advanced GCE marks. 1.75hr written paper
100 marks. Candidates answer all questions. (150 UMS)
This unit contains some synoptic and Stretch and Challenge questions.
A2 Unit 6 F326 Coursework. Candidates complete three tasks set by OCR. Work is
moderated by OCR.
10% of the total Advanced GCE marks
Coursework 40 marks (60 UMS)
Gradings
Raw marks are converted to uniform marks
For both AS and A2, 200 raw marks available converted
to 300 uniform marks
For A grade – 240 uniform marks, B grade – 210
uniform marks, C grade – 180 uniform marks,
D grade – 150 uniform marks, E grade - 120 uniform
marks
These marks apply to both AS and A2 exams
To achieve A* grade at A Level, total of 480 (min)
uniform marks needed BUT AT LEAST 270 OF THESE
MUST COME FROM THE A2 ASSESSMENT
UMS + GRADES
Case A - B grade in Yr12 – 220 UMS
270 UMS in Yr13 - This gives 490
UMS total and equates to A* GRADE even
though only B grade in Yr12
Case B – A grade in Yr12 – 250 UMS
250 UMS in Yr13 – This gives
500 UMS total but equates to A GRADE
because only 250 scored in Yr13.
Entry Requirements
B grade at GCSE Science and B grade at
GCSE Additional Science
B grade at GCSE Chemistry
Why Chemistry
Pursue and develop interest and enthusiasm
Increase knowledge and develop understanding
Role of Chemistry in wider scientific context
Chemistry contributions to society and the
economy
Careers
All Medical sciences
Medicine / Vet / Dentistry / Pharmacy / etc
Any Science career
Accountancy / Economics / Career where
academic subject is specified
Job Prospects
Excellent
Chemistry qualification highly recognised
RESULTS
AS 2011 A-5 B-1 C-3 D-5 E-4
AS 2012 A-2 B-6 C-1 D-2 E-2
AS 2013 A-2 B-4 C-5 D-6 E-1
A2 2011 A-5 B-4 C-3 D-3 E-1
A2 2012 A-3 B-2 C-3 D-0 E-2
A2 2013 A-2 B-3 C-2 D-3 E-2
SAMPLE QUESTION
1 This question is about a model of the structure of the
atom.
(a) A model used by chemists includes the relative
charges, the relative masses and the
distribution of the sub-atomic particles making up the atom.
Complete the table below. particle relative charge relative mass position within the atom
proton
neutron
electron 1/2000 shell
Sample Question Draw a ‘dot-and-cross’ diagram to show the bonding in
MgCl2. Show outer electrons only.
A compound containing magnesium, silicon and
oxygen is also present in rock types in Italy.
A sample of this compound weighing 5.27 g was
found to have the following composition by mass:
Mg, 1.82 g; Si, 1.05 g; O, 2.40 g.
Calculate the empirical formula of the compound.
Show your working.