Stir sugar into water and it seems to vanish. But where did it go? Let's become solubility detectives!
By the end you'll know why some things disappear in water and others just sit there.
When something dissolves, it breaks into pieces so tiny that you can't see them anymore. They spread out and hide between the bits of water — but they are still there!
Tap the spoon to stir and watch the sugar dissolve.
Dissolving needs two helpers. Tap each card to learn its job.
tap me
tap me
Solute + Solvent = Solution!
Sugar (solute) + Water (solvent) = sweet water (solution) 🥤
Drag each thing into the right tub. Does it dissolve in water, or not?
Not everything likes water. Tap each one to find out why it stays whole.
Soluble things can be hurried up. Tap each trick to test it on our sugar timer.
Yes! Keep adding sugar and the water can't take any more — extra sugar piles at the bottom. That's called saturated.
Tap "Add sugar" and watch the glass fill up.
You drop a pebble into a glass of water and wait a long time. What happens?
Why? A pebble is insoluble — it can't break into invisible pieces, so it just sits at the bottom. 🪨
Here's everything you cracked today:
Try at home (with a grown-up): Stir a spoon of salt and a spoon of sand into two cups of water. Watch which one disappears! 🧂🪨