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Using Ice to Boil Water: Science Experiment
Did you know that you can boil water using ice? In this video, Alex Dainis describes the science behind this unique trick! Water will boil at lower temperatures at higher altitudes, because the atmospheric pressure there is lower. Thus, if you can create a low pressure atmosphere in a jar, you can cause water to boil at a temperature lower than 100 degrees Celsisus. To execute this experiment, boil water in a heat proof jar, then screw on the lid. The water will stop boiling, but when you place ice on top of the lid, the water vapor and gasses inside the jar will cool down, creating a lower pressure atmosphere that allows the water to start boiling again!
- Women in STEM
Boiling Water with an Ice Cube
Concept Overview:
1. Decrease in boiling point with decrease in pressure
Lecturer Procedure
- Boiling Point
Boiling Water with Ice
Can you boil water using ice.
Learn about how pressure affects the boiling point of water!
◊ A clear glass flat bottomed flask with a bung
◊ A hot plate or cooker top
◊ Some water
◊ Heat proof gloves and a heat proof mat
1. Bring some water to boil in the flask.
2. Remove the flask from the heat and immediately put the bung tightly in.
3. Leave the flask for a minute, then suspend it upside down on the ring stand.
4. Place some ice cubes on the flat bottom of the flask. What happens?
You should see the water start to boil again! As the water and water vapour in the flask cools because of the ice, the pressure in the flask falls. Water boils at lower temperatures at lower pressures.
So how does this relate to atmosphere?
This is why it is not possible to make a good cup of tea at high altitudes where the pressure is lower! The boiling point of water is 100°C at standard pressure (sea level). On top of Mount Everest the pressure is about 330 mb and so the boiling point of water is about 70°C.
Where can I find more information?
Watch this experiment:
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How to Boiling Water Using Ice
Introduction: How to Boiling Water Using Ice
IMAGES
VIDEO
COMMENTS
To execute this experiment, boil water in a heat proof jar, then screw on the lid. The water will stop boiling, but when you place ice on top of the lid, the water vapor and gasses inside the jar will cool down, creating a lower pressure atmosphere that allows the water to start boiling again! Support the Museum of Science with a donation today!
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Did you know that you can boil water using ice? In this video, Alex Dainis describes the science behind this unique trick! Water will boil at lower temperatu...
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