Chemistry

CHEMISTRY GCSE (AQA)

There are 4 Chemisty Units - Chemisty 1, Chemistry 2, Chemisty 3 and Chemistry 4 (Controlled Assessment).100% of the assessment is at the end of the course – from Summer 2014 onwards.

UNIT 1: Chemistry 1 25% of final mark tested by a 1 hour exam

The unit is assessed by a 1 hour examination. It will be a "Structured Questions" examination with one longer response assessing "Quality of Written Communication" worth 6 marks. The paper is marked out of 60. The unit comprises:

  • The Fundamental Ideas of Chemistry
  • Limestone and Building Materials
  • Metals and their Uses
  • Crude Oil and Fuels
  • Other Useful Substances from Crude Oil
  • Plant Oils and their Uses
  • Changes in the Earth and its Atmosphere.

UNIT 2: Chemistry 2 25% of final mark tested by a 1 hour exam

The unit is assessed by a 1 hour examination. It will be a "Structured Questions" examination with one longer response assessing "Quality of Written Communication" worth 6 marks. The paper is marked out of 60. The unit comprises:

  • Structure and Bonding
  • How Structure influences the Properties and Uses of Substances
  • Atomic Structure
  • Analysis and Quantitative Chemistry
  • Rates of Reaction
  • Exothermic and Endothermic Reactions
  • Acids
  • Bases and Salts
  • Electrolysis.

UNIT 3: Chemisty 3 25% of final mark tested by a 1 hour exam

The unit is assessed by a 1 hour examination. It will be a "Structured Questions" examination with one longer response assessing "Quality of Written Communication" worth 6 marks. The paper is marked out of 60. The unit comprises:

  • The Periodic Table
  • Water
  • Calculating and Explaining Energy Changes
  • Further Analysis and Quantitative Chemistry
  • The Production of Ammonia
  • Alcohols
  • Carboxylic Acids and Esters.

UNIT 4: Chemistry 4 25% of final mark

This is the controlled assessment for Chemistry. The assessment consists of two written assessments along with a practical assessment and data processing. This is known as an ISA.

Students are given a practical topic to research and they use this research to plan an experiment. They can use teacher's/parent's knowledge, text books and the internet as long as these "sources" are fully documented and credited. The students are given a "planning sheet" to enable them to get all the information they need. They then sit a "controlled assessment exam" where they use their prepared "plan" to answer questions. A short time after this the students will be given a practical based on the same topic they researched. They will complete the practical tasks set in groups but they will record results and plot a graph independently. A written examination then tests their understanding of the scientific terminology relating to their experiment and a second section tests their general understanding of practical aspects of Chemistry more loosely related to the topic they have researched.

AQA A LEVEL CHEMISTRY

OUTLINE OF COURSE – AS EXAMS 2015 – A2 EXAMS 2016

At AS, this new course introduces new topics as well as building on previous studies in Chemistry.At A2, the course enables students to develop a deeper understanding from more advanced study.The course is QCA approved and has been designed to enable students to:

  • develop their knowledge and understanding of Chemistry to provide a pathway to further study
  • enjoy learning about and develop their enthusiasm for Chemistry
  • build on the concepts of How Science Works that were introduced at GCSE.
  • develop essential knowledge and understanding of different areas of the subject and how they relate to each other
  • develop new, more advanced practical laboratory skills.

There is an element of mathematics involved in the study of Chemistry and although it is not necessary to study A level Mathematics to succeed on this course, a reasonable ability in the subject is essential.

The first year of the course leads to a stand alone AS qualification.
At AS, candidates study the chemical reactivity of atoms and molecules and provides an understanding of their structures The development and use of periodic table is explained.

  • Unit 1 Foundation Chemistry 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.
  • Unit 2 Chemistry in Action Collision theory and effect. Definitions of oxidation and reduction. Redox properties of halogens and halide ions. The extraction of metals. Haloalkanes and alkenes.
  • Unit 3 Practical and Investigative Skills Practical work in the contexts of Units 1 and 2. Assessment of observing, measuring, analysing and evaluating by AQA-set tasks.

The second year of the course leads to an “A2” qualification:
At A2, candidates study kinetics, equilibria, organic chemistry and spectroscopic techniques to determine the molecular formulae and structures of organic compounds.

  • Unit 4 Kinetics, Equilibria and Organic Chemistry 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.
  • Unit 5 Energetics, Redox and Inorganic Chemistry Thermodynamics. Periodicity; reactions of Period 3 elements. Redox equilibria. General properties of transition metals.
  • Unit 6 Practical and Investigative Skills Candidates continue to carry out practical work in the contexts of Units 4 and 5. Assessment of observing, measuring, analysing and evaluating by AQA-set tasks.

ASSESSMENT METHODS

AS: Exams June. Pass Grades A B C D E

  • Unit 1: Written paper – 1 hour 15 minutes – 33% of total AS marks and 16% of total A level marks.
  • Unit 2: Written paper – 1 hour 45 minutes – 46% of total AS marks and 23% of total A level marks.
  • Unit 3:Internal Assessment – 20% of total AS marks and 10% of total A Level Marks

A2: Exams June. Pass Grades A B C D E

  • Unit 4: Written paper – 1 hour 30 minutes - 16% of total A level marks.
  • Unit 5: Written paper – 2 hours 15 minutes – 23% of total A level marks.
  • Unit 6:Internal Assessment - 10% of total A Level Mark