T11+-+Data+Collection


 * Topic 11: Measurement and DCP**

** Topic 11: Measurement and data processing (2 hours) - taught throughout the year in conjunction with IA's ** ** 11.1 Uncertainty and error in measurement - **** 1 hour ** 11.1.1 Describe and give examples of random uncertainties and systematic errors. (2) 11.1.2 Distinguish between precision and accuracy. (2) 11.1.3 Describe how the effects of random uncertainties may be reduced. (2) 11.1.4 State random uncertainty as an uncertainty range (±). (1) 11.1.5 State the results of calculations to the appropriate number of significant figures. (1)
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 * || [[file:Errors and uncertainties in chemistry internal assessment.pdf]] ||

** 11.2 Uncertainties in calculated results - **** 0.5 hour ** 11.2.1 State uncertainties as absolute and percentage uncertainties. (1) 11.2.2 Determine the uncertainties in results. (3)
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** 11.3 Graphical techniques - **** 0.5 hour ** 11.3.1 Sketch graphs to represent dependencies and interpret graph behavior. (3) 11.3.2 Construct graphs from experimental data. (3) 11.3.3 Draw best-fit lines through data points on a graph. (1) 11.3.4 Determine the values of physical quantities from graphs. (3)
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 * Topic 11 Resources: **