A) 3 B) 4 C) 2 D) 1
A) neutron B) electron C) element D) proton
A) neutron B) element C) proton D) electron
A) proton B) element C) neutron D) electron
A) electron cloud B) nucleus C) neutron D) heart of the atom
A) neutral (no charge) B) both positive and negative C) positive D) negative
A) neutral B) negative C) both positive and negative D) positive
A) electron cloud B) nucleus C) both the nucleus and the electron cloud D) heart of the atom
A) Thomson B) Chadwick C) Bohr D) Dalton
A) Democritus B) Rutherford C) Dalton D) Thomson
A) Dalton B) Thomson C) Rutherford D) Democritus |