An atom:
1) is the smallest whole unit of matter
2) can form one or more elements
3) is the smallest whole unit of matter with the properties of a specific element
4) all of the above

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

What is the mass of phosphorous in a 51-kg person

What is the number of neutrons in an atom with atomic mass of 35