Atomic Models and Periodic Table

Which scientist discovered the electron?

• Bohr
• Rutherford
• Dalton
• Thomson

Which scientist thought that electrons orbit the nucleus in specific rings?

• Bohr
• Rutherford
• Dalton
• Thomson

Which subatomic particle has a negative charge?

• Proton
• Neutron
• Electron
• Quark

Which scientist thought of atoms as tiny solid spheres?

• Rutherford
• Bohr
• Thomson
• Dalton

Which scientist discovered the atomic nucleus?

• Bohr
• Rutherford
• Dalton
• Thomson

Which two particles make up the atomic nucleus?

• proton, electron
• neutron, electron
• proton, neutron
• electron, quark

Tags

NGSS.MS-PS1-1

Which part of the atom makes up the majority of the mass?

• Electron
• Nucleus
• Proton
• Electron Cloud

This is the lightest element in period 4.

• Potassium
• Beryllium
• Carbon
• Helium

The first energy level can hold this number of electrons.

• 2
• 4
• 8
• 18

The noble gas that does not have 8 valence electrons.

• Neon
• Oxygen
• Helium
• Hydrogen