Matter is anything that has mass and takes up space. Which of the following is true about mass vs. weight? (select all true answers). a the mass and weight of a substance will be equal to each other throughout the Universe b you would weigh less on the moon, but your mass would be the same c weight is a measure of how much gravity is pulling down on a mass d you would weigh more on the moon than you do on Earth because the moon is a smaller mass than Earth.