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Change of State. Focussing on water. Water can exist as three states at ambient temperatures. Solid (Ice) Liquid (Water) Gas (water vapour or steam). How do we change from one to another?. Experiment: What happens when you boil water ?. What temperature does tap water boil at?

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change of state

Change of State

Focussing on water

water can exist as three states at ambient temperatures
Water can exist as three states at ambient temperatures
  • Solid (Ice)
  • Liquid (Water)
  • Gas (water vapour or steam)
experiment what happens when you boil water
Experiment:What happens when you boil water ?
  • What temperature does tap water boil at?
  • Does this temperature change if you have other substances in the water?
equipment
Equipment

Use identical beakers and the same thermometer for each experiment

safe practice
Safe Practice
  • What is necessary?
your samples in 250 ml beakers
Your samples in 250 ml beakers

100 mL tap water +

2 teaspoons salt

100 mL tap water

100 mL tap water +

6 teaspoons salt

100 mL tap water +

4 teaspoons salt

your results
Your results
  • Download the file Salty Water Excel Graphing File from the Intranet and record your results. They will graph automatically.