Which statement is true about both a solid and a gas?
the atoms of both are moving.
the both have defined shapes in any space.
they both fill a container.
there is never any motion in either.

The solution is... They both fill a container, Solid atoms don't move and gases do. Gases don't have a shape only solids, Gases move very quickly so ''There is never any motion in either'' is not correct.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

answerleaving cheese out to get moldy;