In a car cylinder, a piston moves up and down inside a cylinder, causing the substance inside to expand and contract. which type of substance could be inside the cylinder?
gas only
liquid only
liquid or solid only
gas, liquid, or solid

•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?