CLEAPSS Supporting practical science and technology
PP055 - Changing state - melting ice and heating water
This procedure has often been used as an introduction to Y7 science. A beaker of water is placed on a tripod and gauze and the Bunsen adjusted to deliver a very hot flame. There have been instances of water “bumping” and scolding students. Students have been burned moving tripods and gauzes. This is usually used as an introductory procedure in early stages of science courses. Emphasis should be made on the on the safe use of using retort stands, bosses and clamps, safe use of the Bunsen Burner and dealing with hot materials in science.