2. Atoms & Elements

Which of the following subatomic particles has the least mass?

Which of the following subatomic particles always has a positive charge?

Which two subatomic particles each have a mass approximately equal to one atomic mass unit?

Which of the following best describes the electric charge of a neutron?

Which subatomic particle is electrically neutral?

Which subatomic particle has a negative charge and is found outside the nucleus?

Which subatomic particle is most movable in an atom and can occupy an orbital?

Which subatomic particles have a positive charge?

Gold atoms can be identified based on the number of which subatomic particles?

Which of the following subatomic particles has the smallest mass?

Which of the following statements about subatomic particles is true?

Approximately how many electrons are needed to equal the mass of a single proton?

Which subatomic particles do not affect the stability of the atom?

Which subatomic particle plays the greatest role in determining the chemical properties of an element?