Pressure and Volume relationship

AI Thread Summary
Pressure and volume are inversely related, as described by Boyle's Law, which states that at constant temperature and quantity of gas, an increase in pressure results in a decrease in volume, and vice versa. The confusion arises when considering the behavior of gas molecules under changing conditions. To increase pressure in a balloon without adding gas or altering temperature, one could decrease the volume of the balloon, causing the gas molecules to collide more frequently with the walls, thus increasing pressure. This highlights the importance of maintaining constant temperature and gas quantity when applying Boyle's Law.
gkangelexa
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hey!

Pressure and Volume are inversely proportional to each other
When you decrease the volume, the pressure increases.
However, when you increase the pressure, it seems to me that the gas molecules want to spread out more and the volume would increase, but boyle's law says that it should decrease because they are inversely related.
What is wrong in my thinking?
 
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Boyle's law applies only under conditions where the amount of gas molecules and the temperature of the gas remain constant.

So, let's say you have a balloon full of gas. How would you increase the pressure in that balloon without adding gas molecules or changing the pressure?
 

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