Solutions practical and solubility - covers calculating a mean, drawing a bar graph

This is a lesson on solubility where students carry out an independent practical to find a method for dissolving a sugar cube the fastest. Equipment could include a pestle and mortar, water bath, sugar cube, distilled water, tap water, thermometer, stop watch, beaker and measuring cylinder. Higher ability groups could design their own investigation and choose their equipment. Discuss what factors affect solubility. Students then compare the solubility of different solutes by drawing a bar graph of mean solubility values. Higher ability students may exclude anomalies when calculating the mean. Please rate this resource and leave feedback.