Justin bleeber is a lazy young man and decides to burn a pile of leaves instead of bagging it. the pile of leaves weighed three pounds before being burned. after the leaves are burned the leftover ash weighs half a pound. what happened to the rest of the mass of the leaves? a) it was destroyed. b) it soaked into the ground. c) it compacted into the ash. d) it was turned into smoke and gas.

Its D. Because the rest of the mass turned to gas

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.