To continue or practical enquiries, we carried out a carousel of activities to:
- see how water can change from liquid to gas, then back again, using steam from a kettle
- ice (a solid) can be turned to liquid by heating it up
- see how salt causes ice to melt quicker
- explain the terms evaporation, condensation, melting, vapour
We learned that salt does not heat up the ice. To demonstrate how the ice melts quickly by adding salt, we learned about chemical reactions. The boys huddled together representing the particles in ice, staying close together as they would be in a solid. The girls then pushed their way into the solid mass, breaking up the boys’ structure and , causing particles to breakdown and move more freely, making a liquid. This is why we put ice on roads in Winter.
No particles were injured during the enquiries!
