Which of the following statements BEST describes a compound?
(10 Points)
A. A compound is composed of atoms from two or more different kinds of elements that are chemically combined.
B. A compound is a molecule composed of two or more atoms from the same element that are chemically combined.
C. A compound is a pure substance composed of one atom from one type of element.
D. A compound is an atom composed of two or more molecules from only one element.

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.