SL22 CMST Chemistry workshop water in our life

18 avr. 2022

Different workshops are proposed.

Acidity and alkalinity of aqueous solutions: Change colors or water because of acide. With special papers they compare the color of pH to know how acide it is. They controle basic, neutral or acide.

Lavalamp: they put vitamin C with bublles, water and oil.

Waterpump: to put a candel in a box of water… without oxygen water goes up

Foam Volcano: water

Filtration: dirty water in a filter of coffee doesn’t change the color. When we use only sand the filter is better and water becomes clean.

Preparation and proof of Hydrogen and oxygen with water: Chloryde acide is putting in a tube, the flavor is catched in another one and put on a flame, after few second it makes a noisy explosion

Put a stick in a tube warm, a flame arrives with a noise.

Dichromate Volcano: how to create a little eruption in laboratory

Students learnt about experience with water and different states, chemistery reactions by peer to peer.