4. Which of the following statements correctly describe atoms? Select all that apply. A)Atoms have mass,
B)Atoms are the basic unit of a chemical element.
C)Matter is made of atoms.
D)Atoms take up space.

A, B, and C

Explanation:

Atoms do in fact have mass! They are also the basic unit of a chemical element. Matter is in fact made of atoms, but atoms do not take up space.

Atoms are filled with empty space, excluding it out from the rest of the answers.

So yes, A, B, and C should be the correct answers

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.