“Alien soup” is a fun way of learning how to separate mixtures using scientific processes.
What you need
- rice, sand, salt, paperclips
- glass, spoons, sieve, magnet, filter paper
- lid of a larger saucepan
- dish to collect water drops (large because you don’t know exactly where they’ll land)
What you do
C(9) and J(8) mixed up a spoonful each of rice, sand, salt, 10 paperclips and 100ml of water.
Then they read …
“Oops! We added too much salt! We need to separate out all the ingredients and start again!”
You should have seen the looks on their faces at this point. “What? How are we going to separate that?!”
It was fun watching as they gradually figured out how to separate each ingredient.
Separating the mixture
J(8) remembered how we’d removed paperclips from water when we had our magnet morning.
“Hmmm. The salt is dissolved in the water! How do we get that back out?”
They heated the salt solution in a saucepan, capturing the evaporated water on the oversized lid. The condensed water was then collected as it dripped off the lid.
I hadn’t been sure how C(9) and J(8) would get on with this activity. I knew they’d enjoy it, but I thought I might have to help them more than I did.
Seeing how they confidently and intelligently tackled the puzzle reassured me that our science un-curriculum is still working well.
I’m appreciatively linking up here:
Entertaining and Educational