Report written by the Kingfishers who were still here after 3pm (when we had cleaned up).
Today we have been investigating mixtures and solutions. We mixed Dihydrogen monoxide* with paperclips, sand and rice to form a mixture. Into this, we then dissolved salt. We discussed the difference between a mixture and a solution.
Mr Beech then asked us to give him back all four of the ingredients: salt, sand, rice and paperclips.
First, we dipped a magnet into our ‘soup’ to remove the paper clips – paperclips are the only thing in there that contain iron (special shout out to Amber for this knowledge) so they stuck to the magnet.
Next, we strained the mixture through a sieve. This only removed the rice because the sand and saltwater went straight through.
Thirdly, we filtered the sand out using a funnel and filter paper, leaving only the saltwater.
Finally, we evaporated the solvent (Dihydrogen monoxide) leaving only the salt in the pan. A special mention to Molly for thinking of this!
*H2O to the rest of us!