For a fixed amount of gas at a fixed temperature, what will happen if the volume is doubled?.

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.