Chemistry

 

Chemists have greatly improved the quality of life for the majority of people, whether it is through the discovery of new life saving pharmaceuticals or through the research and development of new environmentally friendly fuels. The AQA Specification is underpinned by recognition of How Science Works, to show Chemists as innovators, designing solutions to the problems that affect modern life. It recognises the contribution Chemists make to everyday lives. Chemistry is inherently a practical subject and, in-line with QCA's requirements; two units will be teacher based assessment. At AS, it is appreciated that many students have a slow start due to the transition from GCSE. Unit 1 is small enough to be taught by January. After the Christmas break, students usually learn faster, having adapted to the mindset of AS, so Unit 2 is larger and carries a greater UMS weighting. Both units will be assessed in June. At A2 the structure is as flexible as possible. Units 4 and 5 have equal weighting, with a synoptic element from AS Level. Unit 4 will be taught by January and Unit 5 will be taught after the Christmas break. Pupils will sit both exams in June.

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AS outline

 

At AS Level candidates are given a solid grounding in foundation chemistry. The specification introduces the chemical reactivity of atoms and molecules and provides an understanding of their structures. The development and use of periodic table is explained. The introduction of Practical Skills Assignments (PSA) into the specification allows teachers to credit candidates for work done in routine class practicals. Assessment becomes linked to the work of the course, and moves away from formulaic testing.

 

A2 outline

 

At A2 Level the specification develops the concepts of physical chemistry introduced at AS. Candidates will study kinetics, equilibria, organic chemistry and spectroscopic techniques to determine the molecular formulae and structures of organic compounds. Candidates will continue to be assessed through PSA, gaining credit for work done in routine class practicals.

 

What will I study?

 

The AS specification has 3 units:

Unit 1: Foundation Chemistry

Topic list:

• Particles, composition of the nucleus, isotopes and use of mass spectrometer

• Calculating the amount of substance

• Ionic, covalent and metallic bonding and intermolecular forces

• The construction of the periodic table

• Organic chemistry

• Alkanes from crude oil.

 

Exam paper consists of 4 - 6 short answer questions plus one or two longer structured questions.

 

Unit 2: Chemistry in Action

Topic list:

• Collision theory and effect

• Definitions of oxidation and reduction

• Redox properties of halogens and halide ions

• The extraction of metals

• Haloalkanes and alkenes.

 

Exam paper consists of 6 - 8 short answer questions plus two longer questions.

 

Unit 3: Investigative and Practical Skills - Internal Assessment

Topic list:

• Making observations and measurements

• Analysing and evaluating results.

Teacher assessment of practical skills (PSA) 12 marks.

Teacher assessment of investigative assignment (ISA) 38 marks.

 

Second Year (A2 year)

The A2 specification has 3 units:

 

Unit 4: Kinetics, Equilibria and Organic Chemistry

Topic list

• Acids and bases

• Nomenclature and Isomerism in organic chemistry

• Compounds containing the carbonyl group

• Amines; base properties and nucleophilic properties

• Polymers

• Organic synthesis and analysis.

Exam paper consists of 6 - 8 short answer questions plus one or two longer structured questions.

 

Unit 5: Energetics, Redox and Inorganic Chemistry

Topic list:

• Thermodynamics

• Periodicity; reactions of Period 3 elements

• Redox equilibria

• General properties of transition metals.

Exam paper consists of 5 - 7 short answer questions plus two or three longer structured questions.

 

Unit 6: Investigative and Practical Skills - Internal Assessment

Topic list:

• Making observations and measurements

• Analysing and evaluating results.

Teacher assessment of practical skills (PSA) 12 marks.

Teacher assessment of investigative assignment (ISA) 38 marks.

 

How will I be assessed?

 

AS Level

Unit 1 Written paper (1hr 15 mins) 34% of AS – 17% of A2

Unit 2 Written paper (1hr 45 mins) 46% of AS – 23% of A2

Unit 3 Practical Skills Assignment 20% of AS – 10% of A2

 

AS marks constitute approximately 50% of final A2 award.

 

A2 Level

Unit 4 Written paper (1hr 45 mins) 20% of A2

Unit 5 Written paper (1hr 45 mins) 20% of A2

Unit 6 Practical Skills Assignment 10% of A2

 

Entry Requirements

 

Route 1 – Grade B (or at least BB from Core and Additional Science), Grade B in Mathematics is desirable

Route 2 – Grade B (or at least BB from Core and Additional Science), Grade B in Mathematics is desirable

Route 3 – Not available

Route 4 – Not available

 

Career Opportunities

 

You may be interested in this subject if you are considering a career in the following: Medicine Dentistry Veterinary Science Pharmacy Research and Development Education Law Stock broker