GCSE Chemistry Specification

OCR B J258

Section C7.IaS1: What needs to be considered when investigating a phenomenon scientifically?

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#C7.IaS1.1

in given contexts use scientific theories and tentative explanations to develop and justify hypotheses and predictions

#C7.IaS1.2

suggest appropriate apparatus, materials and techniques, justifying the choice with reference to the precision, accuracy and validity of the data that will be collected

#C7.IaS1.3

recognise the importance of scientific quantities and understand how they are determined

#C7.IaS1.4

identify factors that need to be controlled, and the ways in which they could be controlled

#C7.IaS1.5

suggest an appropriate sample size and/or range of values to be measured and justify the suggestion

#C7.IaS1.6

plan experiments or devise procedures by constructing clear and logically sequenced strategies to:

- make observations
- produce or characterise a substance
- test hypotheses
- collect and check data
- explore phenomena

#C7.IaS1.7

identify hazards associated with the data collection and suggest ways of minimising the risk

#C7.IaS1.8

use appropriate scientific vocabulary, terminology and definitions to communicate the rationale for an investigation and the methods used using diagrammatic, graphical, numerical and symbolic forms