Adding a neutron to an atom changes what property of the atom?
a. the charge
b. the volume
c. the atomic mass
d. the atomic number

What are the 4 phases of matter in order of increasing engery content?

An observation that requires measurement is called quantitative observable or qualitative

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !