Atomic Structure

The smallest particle of an element.

• Element

• Molecule

• Atom

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

• 23

• 11

• 12

• 34

________________ have a positive charge, ___________________ have NO charge, and _____________________ have a negative charge.

• Protons, Electrons, Neutrons

• Neutrons, Electrons, Protons

• Protons, Neutrons, Electrons

• Electrons, Neutrons, Protons

"B" is the number of ___ in the atom's ___

• Protons and electrons, nucleus

• Protons and neutrons, shells

• Protons and neutrons, nucleus

• Protons and electrons, shells

What charge is an proton? 

The periodic table is in order by the

• Mass number

• Neutron number

• Atomic number

• APE MAN Number

How many protons does this atom have?

• 2.5

• 6

• 5

• 10.811

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass

• False - They do not have about the same mass

What is the charge on a neutron?

• positive 1

• 0

• negative 1

What is the charge on a proton?

• positive 1

• 0

• negative 1