Question

ok, 2 theoretical questions: 1) Why things stick to the frying pan ? 2) Why soda cans pop (makes the sound when you open them?)

Answer 1

The first question is interesting and not obvious. I'll let someone who knows more expertly answer that one.

The second question I can answer. Soda cans have a higher pressure of gas inside them that outside. The reason for that is the soda itself has had gas forced into it. The soda, then sealed in the can with a small air gap, results in a gas transfer until the partial pressure of each gas in the air space equals that in the solution. In short, this results in a situation where in equilibrium the pressure is greater than 1 atmosphere. And this is also the reason why the 'pop' is relatively less if the can is cold vs. warm.

Answer 2

nice ! thank you, so basiclly the sound is coming from the pressure difference ?

Answer 3

Beyond the sound of the metal bending, there's a "pssh" sound from a rushing out of gas.

Answer 4

alright thank you !! =]