Tuesday, November 11th 2008
Water can be a gas (water vapour) that’s part of the air around us. You can’t see it, so how do you know it’s there?
Teacher got a dry glass. We all felt the outside to check and see if it was dry. It was. Next teacher put ice cubes into the glass.
After a while tiny drops of water formed on the outside of the glass. This is because some of the water vapour in the air changed to liquid when it touched the cold glass.
Teacher got a dry glass. We all felt the outside to check and see if it was dry. It was. Next teacher put ice cubes into the glass.
After a while tiny drops of water formed on the outside of the glass. This is because some of the water vapour in the air changed to liquid when it touched the cold glass.
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