Question

explain how the water in the flask changes to gas​

Answer 1

When the water in the flask boils, it produces steam, which has gas molecules inside the flask that move very quickly, pushing out the air. ... When the flask cools the gas molecules on the inside begin to move much more slowly and create less collisions and thus less pressure.

Answer 2

When the water in the flask boils, it produces steam, which has gas molecules inside the flask that move very quickly, pushing out the air. ... When the flask cools the gas molecules on the inside begin to move much more slowly and create less collisions and thus less pressure.