![]() ![]() 1:15 know the structure of an atom in terms of the positions, relative masses and relative charges of sub-atomic particles. ![]() 1:14 know what is meant by the terms atom and molecule.1:13 practical: investigate paper chromatography using inks/food colourings.1:12 understand how to use the calculation of Rf values to identify the components of a mixture.1:11 understand how a chromatogram provides information about the composition of a mixture.1:10 describe these experimental techniques for the separation of mixtures: simple distillation, fractional distillation, filtration, crystallisation, paper chromatography.1:09 understand that a pure substance has a fixed melting and boiling point, but that a mixture may melt or boil over a range of temperatures.1:08 understand how to classify a substance as an element, a compound or a mixture.1:07 (Triple only) practical: investigate the solubility of a solid in water at a specific temperature.1:06 (Triple only) understand how to plot and interpret solubility curves. ![]()
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