In a cup of water it is a positive and negative charge of zero
NO. although the arrangement of the atoms will change, the total number stays constant.
The relationship between the two is that air temperature changes the air pressure. For example, as the air warms up the molecules in the air become more active and they use up more individual space even though there is the same<span> number of molecules. This causes an </span>increase<span> in the air pressure.</span>