11.1 - Uncertainty and error in measurement
	11.11 - Uncertainties and errors
	11.12 - Precision and accuracy
	11.13 - Random uncertainties
	11.14 - Use of the ± sign in uncertainties
	11.15 - Significant figures
	11.16 - Percentage
	11.17 - Propagation of errors
11.2 - Graphical techniques
	11.21 - Graphing and interpreting data
	11.22 - Scale, axes and points
	11.23 - Plotting lines
	11.24 - The gradient and intercept
11.3 - Spectroscopic identification of organic compounds
	11.31 - Structural identification of unknown compounds
	11.32 - Index of hydrogen deficiency
	11.33 - Mass spectrometry
	11.34 - Infra-red spectroscopy
	11.35 - Proton nuclear magnetic resonance spectroscopy
	11.36 - Single crystal X-ray crystallography