investigating state changes

Aim: To observe water as it changes state from solid to liquid and then to gas

Equipment:

A Beaker

Thermometer

Busen burner

Heatproof mat

Tripod

Gauze mat

Stopwatch

Retort Stand

Clamp

Ice cubes

Method:

1. Collect enough ice so that you beaker is half full and place the thermometer into it while you set up the rest of the equipment

2. Set up you retort stand and clamp alongside the tripod and gauze mat

3. Place the beaker of ice on the gauze mat and gently clamp the thermometer so that it is held upright and the scale is easy to see.The bottom of your thermometer should be low enough to still be covered by water when the ice melts, but not touching the bottom of the beaker.

4.Record the initial temperature of the ice in a data table.

5. Light the bunsen burner and start timing with a stopwatch.

6.Measure and record the temperature every minute.

7.Continue measuring and recording the temperature until the water has been boiling for 2-3 min

results: