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Junior Cert: Solutions and Crystals

Revison Crossword on Atoms and Solutions    
What happens when you add a small crystal (known as a 'seed') to a super-saturated solution? YouTube. 3 mins 5 Star
Sort-of an explanation here YouTube. 2 mins 4 Star
Now can you see how these handwarmers work? YouTube. 1 mins 4 Star
Nice simulation on concentration of solutions From Phet 3 Star
Growing crystals A nice variation - put in a small stone to act as a seed and a mount. YouTube. 1 min 3 Star
Check-out the biggest crystals in the world YouTube 10 mins

4 Star

Much shorter version From the BBC series How the Earth made us. YouTube. 1 min 4 Star