Investigating State Changes

Aim: 

To observe water as it changes state from solid to liquid

Equipment:

A 250 ml beaker
Thermometer
Bunsen Burner
Heatproof mat
Tripod
Gauze mat
Stopwatch
Retort stand with clamp
Ice cubes

Method:

1. Fill the beaker with a little bit of water to prevent cracking
2. Collect enough ice so that your beaker is half full and place the thermometer into it while you set up the rest of the equipment
3. Set up the retort stand and clamp alongside the tripod and gauze mat
4. 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 the water when the ice melts.

Results: 

Time (Min)	Temp (Celsius)
0	0
1	11
2	15
3	16
4	23
5	30
6	44
7	57
8	70
9	82
10	93
11	100

Conclusion

Everyone who was doing the experiment got different results. But for us, it took 11 minutes to reach boiling point. It was around 2 or 3 minutes before the ice completely melted. It heated up quite slowly at the beginning but sped up a lot more at the end.