Science: Separating Mixtures using filter paper, magnets and evaporation.
The challenge this week was to find out ways to separate mixtures. Pupils were given different mixtures including salt and water, sand and rice, sand, rice and drawing pins, flour and rice as well as sand and water and polystyrene balls. They had to come up with a way to separate each ingredient.
Using sieves, filter paper and magnets they got to work.
This week in science we had to test out how temperature and stirring affect dissolving. We mixed sugar with cold, tepid and then hot water and timed how long it took to dissolve in each. We then re-tested, but this time we introduced stirring and compared the difference in our results.
We found out that temperature and stirring speeds us dissolving.