Please help A naïve young chemist believes she has discovered a new element. It has a mass number of 285 and is the heaviest element known to exist. The chemist was so enamored with Superman trivia, she proposed the name of the element as Superonium, symbol Sp. Has a new element been discovered? Defend your answer with either an isotopic notation of this element or description and an explanation of what other information the chemist needs to include with her results and why.

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.