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OCR Chemistry B (Salters’). Chemistry in Practice F333/01 Andrew Jones Principal Moderator. Overview. Skill I Competence 12 marks Skill II Measurement 12 marks Skill III Analysis & Evaluation 12 marks Skill IV Observation 12 marks Skill V Interpretation 12 marks

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ocr chemistry b salters

OCR Chemistry B (Salters’)

Chemistry in Practice

F333/01

Andrew Jones

Principal Moderator

overview
Overview
  • Skill I Competence 12 marks
  • Skill II Measurement 12 marks
  • Skill III Analysis & Evaluation 12 marks
  • Skill IV Observation 12 marks
  • Skill V Interpretation 12 marks

TOTAL 60 marks

skill i competence
Skill I Competence
  • This Skill assesses the ability of Candidates to carry out practical work.
  • It is based upon performance throughout the year.
  • There are three strands of competence:

- safe working;

- manipulative skills, including resolving problems;

- organisation.

slide4
You must cover all six types of practical activity (21 opportunities as part of the course).
  • Use the OCR Mark Descriptors (see Practical Skills Handbook).
  • Choose the ‘best-fit’ mark for each activity type.
  • Use the pro-forma available on Interchange as an ‘aide-mémoire’ – can use words or numbers (this represents best practice).
  • Review the process at the end of the first term to provide a ‘working mark’ - complete assessment in April (needs to reach moderator by 15th May).
slide5
The six types of practical activity are:

- performing a titration;

- making thermochemical measurements;

- qualitative test-tube experiments;

- experiments involving ICT;

- preparing an organic compound;

- collaborating with other students.

skills ii iii iv and v
Skills II, III, IV and V
  • OCR provide:

- Tasks for Candidates;

- Mark Schemes for Teachers;

- Instructions for Teachers and Technicians.

  • The Tasks are taken under controlled conditions – they cannot be taken away.
  • Candidates cannot use books or notes – they are only permitted the Data Sheet.
slide8
A Candidate cannot modify answers after that Task has been completed.
  • A Candidate cannot repeat the same Task, but can do a different Task to assess the same Skill.

In this case the best mark is used for the Skill.

  • Candidates should not take a Task until they have had opportunity to develop the necessary skills.
  • When complete mark strictly according to the OCR Mark Scheme.
slide9
Skills II and III may be coupled assessments from the same Task, partially coupled, or completely decoupled.
  • Skills IV and V also may be coupled, partially coupled or decoupled.
  • There will always be three choices of Task for each Skill per year.
skill ii measurement
Skill II (Measurement)
  • Examples here include various types of volumetric analysis and thermochemical experiments.
  • Assessment is made of the ability to:

- make measurements and to record data;

- work accurately when compared to a teacher value.

skill iii analysis and evaluation
Skill III (Analysis and Evaluation)
  • Assessment is made of the ability to:

- carry out a calculation from given data;

- calculate percentage uncertainty associated with measurement;

- comment upon the limitations of practical procedures.

skill iv observation
Skill IV (Observation)
  • Examples here include observing test-tube reactions from Group II, Group VII, Organics.
  • Assessment is made of the ability to:

- make and record accurate observations.

skill v interpretation
Skill V (Interpretation)
  • Assessment is made of the ability to:

- identify patters or trends in reactions;

- identify types of reactions;

- write equations (including ionic) for reactions.

moderation
Moderation
  • Centres will be required to submit marks to OCR on an MS1 or electronic equivalent.
  • OCR will request a sample of work to include marked Tasks for Skills II, III, IV, and V to be sent to a named moderator.
  • Also sent to the moderator will be:

- the mark for Skill I (+ supporting documents);

- the Centre Authentication Form (CCS160);

- the marks summary spreadsheet.