What happens to the gas pressure within a sealed gallon can when it is heated? When it is cooled? Why?
Answer: 1) When gallon heated: When the gallon is heated, the pressure inside the gallon increases and at last the gallon will burst or explode. 2) When the gallon is cooled When the gallon is cooled , the pressure inside the gallon decreases and the hot air from outside try to enter the gallon by squeezing the gallon.