Week 3 Term 2

This week, in science, we were hypothetically on a desert island, in desperate need of fresh water, having only salt water and a range of equipment.
We had a hot plate, two side arm flasks and a tube, and two bits of wood to put the flasks on when they were hot. And 100mls of salt water, that was coloured blue.
I knew that when we boiled the salt water, the condensation would be fresh water and the salt would be left in the bottom. I didn't understand how we were supposed to get the condensation to go into the tube and in the other flask though, because I thought it had to be at the top. We boiled it anyway and hoped for the best.
Turns out the condensation did go into the other tube, and it did gather at the bottom of the second flast. We were left with clear, fresh, hot water in one flask, and blue-coloured salt in the other one.

Last week we made slime. We mixed cold water and wood glue, which gave a white, completely liquid substance. Then we added boiling water mixed with Borax, and coloring, and it because really hard to stir, because the molecules were moving close together so it was becoming more solid.
All the gooey bits were wrapped around the stick, and all the liquid was still in the bottom of the container, but eventually, with lots more hot water, it all became slime. It didn't stick to the stick or the container, and afterwards we had a lot of fun having sculpting competitions.