QUESTION 2
Which components of the atom have a positive charge?
protons
electrons
neutrons
All components have a positive charge.
QUESTION 3
Which component of the atom has the least mass?
protons
electrons
neutrons
All are the same size.
QUESTION 4
The identity of an element depends on the number of
protons in the atom.
electrons in the atom.
neutrons in the atom.
protons and neutrons in the nucleus.
QUESTION 5
What did Rutherford contribute to the model of the atom?
the electron
the nucleus
the neutron
the proton
