Atomic structure

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

An atom of the element with atomic number 6 always has _____.

• six protons in its nucleus
• an atomic mass of six
• more than six neutrons
• six electron clouds

What are subatomic particles? 

• the nucleus 
• electron cloud
• positive charge
• electrons, protons, and neutrons

These will determine what element an atom is. 

• number of neutrons
• number of electrons
• number of atoms 
• number of protons 

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

How many electrons does potassium K contain? (click to see image)

• 19
• 39
• 20
• 40

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Subatomic particle with a charge of 0

• neutron
• proton
• electron
• quark