Foamy Fun and Finding a Solution.
We have been exploring different substances as part of our materials science topic.
This week we started by exploring shaving foam.
We discovered that the foam was made of tiny bubbles. Each bubble is made from a liquid surrounding a gas and over time the bubbles burst and the foam collapses.
We could whisk egg whites to make an egg foam and then use this to make a baked Alaska - there are many recipes available online. Perhaps we could take a photo of our baked Alaska and share this with our class.
We also investigated solutions this week. We started with defining some technical vocabulary: dissolve, solution, solvent and solute.
We used identical cups, with identical amounts of water in; we measured our solids with identical spoons and stirred each spoonful 20 times! We even learned how to measure a 'flat' spoonful. The only thing we changed was the solid we added - this made our test fair.
We found out that salt and all types of sugar were soluble, but that sand was insoluble.
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