Atomic Structure

"A" is the element's what?

• Atomic mass

• Mass number

• Atomic number

"B" is the element's what?

• Atomic mass

• Mass number

• Atomic number

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

How many neutrons does a sodium atom have? (Use the image to help you)

• 23

• 11

• 12

• 34

How many protons does this atom have?

• 2.5

• 6

• 5

• 10.811

The horizontal row on the periodic table is called a

• group

• family

• period

• atomic number

What charge is an proton? 

Found in the nucleus of an atom. This particle has a positive charge.

• Neutron

• Proton

• Electron

• Decepticon

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

• Neutron

• Proton

• Electron

• Idontknowatron