Practicla chnages of state

Question 1

What are the equipments needed in the experiment?

Remember the aim of this experiment is to investigate how the temperature of ice varies when it changes state from a solid to a liquid

Answer 1

• Thermoteore
• Ice cubes
• Beakre
• Tripod and gauze
• Bunsen burner
• Stop watch

Tripod and gauze are used to keep the beakre in place

Question 2

What is the method in the experiment?

Answer 2

1. Place the ice cubes in the beaker (it should be about half full)
2. Place the thermometer in the beaker
3. Place the beaker on the tripod and gauze and slowly start to heat it using the bunsen burner
4. As the beaker is heated, take regular temperature measurements (e.g. at one minute intervals)
5. Continue this whilst the substance changes state (from solid to liquid)

The results need to anylised

Analysis of Results
Plot a graph of the temperature (y-axis) against time (x-axis)
The graph will show regions where:
The temperature of the ice cubes increases
There is no temperature change (even though the ice cubes continue to be heated)
This should occur at 0 °C, where the ice is melting from solid to liquid

Question 3

What does a graph show in this experiment?

Answer 3

The chnages of state from a solid-liquid-gas