The four giant gas planets that are made primarily of lightweight elements are
a. mercury, venus, earth, and neptune.
b. earth, saturn, neptune, and venus.
c. venus, saturn, uranus, and neptune.
d. jupiter, saturn, uranus, and neptune.

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.