A-level Chemistry₇₄₀₅

Find past papers and mark schemes, and specimen papers for new courses, on our website at aqa.org.uk/pastpapers

This specification is designed to be taken over two years with all assessments taken at the end of the course.

A-level exams and certification for this specification are available for the first time in May/June 2017 and then every May/June for the life of the specification.

This is a linear qualification. In order to achieve the award, students must complete all exams in May/June in a single year. All assessments must be taken in the same series.

Questions for this specification will be set which require students to demonstrate:

• their knowledge and understanding of the content developed in one section or topic, including the associated mathematical and practical skills or
• the ability to apply mathematical and practical skills to areas of content they are not normally developed in or
• the ability to draw together different areas of knowledge and understanding within one answer.

A range of question types will be used, including those that require extended responses. Extended response questions will allow students to demonstrate their ability to construct and develop a sustained line of reasoning which is coherent, relevant, substantiated and logically structured. Extended responses may be in written English, extended calculations, or a combination of both, as appropriate to the question.

All materials are available in English only.

4.1 Aims

Courses based on this specification should encourage students to:

• develop their interest in and enthusiasm for the subject, including developing an interest in further study and careers associated with the subject
• develop essential knowledge and understanding of different areas of the subject and how they relate to each other
• develop and demonstrate a deep appreciation of the skills, knowledge and understanding of scientific methods
• develop competence and confidence in a variety of practical, mathematical and problem solving skills
• understand how society makes decisions about scientific issues and how the sciences contribute to the success of the economy and society
• use theories, models and ideas to develop scientific explanations

• use knowledge and understanding to pose scientific questions, define scientific problems, present scientific arguments and scientific ideas

• use appropriate methodology, including information and communication technology (ICT), to answer scientific questions and solve scientific problems

• carry out experimental and investigative activities, including appropriate risk management, in a range of contexts

• analyse and interpret data to provide evidence, recognising correlations and causal relationships

• evaluate methodology, evidence and data, and resolve conflicting evidence
• know that scientific knowledge and understanding develops over time
• communicate information and ideas in appropriate ways using appropriate terminology
• consider applications and implications of science and evaluate their associated benefits and risks
• consider ethical issues in the treatment of humans, other organisms and the environment
• evaluate the role of the scientific community in validating new knowledge and ensuring integrity
• evaluate the ways in which society uses science to inform decision making.

4.2 Assessment objectives

Assessment objectives (AOs) are set by Ofqual and are the same across all A-level Chemistry specifications and all exam boards.

The exams will measure how students have achieved the following assessment objectives.

• AO1: Demonstrate knowledge and understanding of scientific ideas, processes, techniques and procedures.
• AO2: Apply knowledge and understanding of scientific ideas, processes, techniques and procedures:
• in a theoretical context
• in a practical context
• when handling qualitative data
• when handling quantitative data.
• AO3: Analyse, interpret and evaluate scientific information, ideas and evidence, including in relation to issues, to:
• make judgements and reach conclusions
• develop and refine practical design and procedures.

Weighting of assessment objectives for A-level Chemistry

20% of the overall assessment of A-level Chemistry will contain mathematical skills equivalent to Level 2 or above.

At least 15% of the overall assessment of A-level Chemistry will assess knowledge, skills and understanding in relation to practical work.

4.3 Assessment weightings

The marks awarded on the papers will be scaled to meet the weighting of the components. Students’ final marks will be calculated by adding together the scaled marks for each component. Grade boundaries will be set using this total scaled mark. The scaling and total scaled marks are shown in the table below.