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Thursday 17 September 2020

Science

 aim: the see what happens when you put a heated can in cold water

hypothesis: i thought it was gonna blow up

but it didn't instead it squeezed the can together because we boiled the can and the water inside and then we put the can head in into the cold water and then it got squeezed together.

Before heating, the can is filled with water and air. When boiling the water, the water changes states from a liquid to a gas (Water Vapor) The water vapor pushes the air that was originally inside the can out into the atmosphere. When the can is turned upside down and placed in the water, the mouth of the can forms an airtight seal against the surface of the water in the bowl. In just a split second, all of the water vapor that pushed the air out of the can and filled up the inside of the can turns into only a drop or two of liquid, which takes up much less space. 

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