Are these right?


Which of the following factors does NOT affect the behavior of a gas in a closed container?


the number of particles

the average kinetic energy

the cohesive forces within the gas

the size of the container


Which is NOT a possible sign of a physical change?


change in appearance

change in volume

the release of energy

change in color


Which of the following types of substances would be least likely to dissolve in water?


nonpolar molecule like cholesterol*

polar molecule like ethyl alcohol

ionic compound, such as magnesium chloride

polar mole like the