Atomic structure, Isotopes, Ions

What is the nucleus? 

• The center (middle) of the atom
• The outside electron cloud
• The area inside the electron charge
• The positive or negative charge of the atom 

What two sub-atomic particles are inside the nucleus of the atom? 

• Protons and Electrons
• Electrons and Neutrons
• Protons and Nucleus 
• Protons and Neutrons 

Which sub-atomic particle is OUTSIDE the nucleus of the atom? 

• Electron
• Neutron
• Proton
• Nucleus 

What two particles make up the ATOMIC MASS of an element? 

• Protons and Neutrons
• Protons and Electrons
• Electrons and Nucleus
• Electrons and Neutrons

Which particle makes up the ATOMIC NUMBER of an element? 

• Protons
• Electrons
• Protons and Neutrons
• Neutrons

The positively charged sub-atomic particles is...

• Proton

• Neutron

• Electron

• Nucleus

• Shell

The negatively charged sub-atomic particles is...

• Proton

• Neutron

• Electron

• Nucleus

• Shell

The sub-atomic particle with a charge of zero is...

• Proton

• Neutron

• Electron

• Nucleus

• Shell

The central part of the atom is...

• Proton

• Neutron

• Electron

• Nucleus

• Shell

Atoms are big enough to see with the human eye.

• True

• False