Atoms and the Periodic Table Quiz

Where can you find most of an atom's mass?

• In the electron cloud
• in the orbitals around the nucleus
• in the nucleus
• in a doctor's office

What does the atomic number of an element represent?

• number of protons in an atom
• number of neutrons in an atom
• mass of an atom
• charge of an atom

How many protons does an Aluminum atom have? (use the picture to help you)

• 27
• 13
• 14
• 40

What characteristic of an element's atoms ALWAYS determines the element's identity?

• the number of neutrons
• the number of protons
• the atomic mass
• the number of valence electrons

If an atom has an equal amount of protons and electrons, what will its charge be?

• Positive

• Negative

• Neutral

• Infinite

Which of these is the proton.

• A
• B
• C
• None

The yellow elements are called

• metals

• nonmetals

• metalloids

• noble gases

The periodic table has __ periods.

• 18
• 8
• 2
• 7

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S

What period and group is Silver (Ag)? 

• Period 2, Group 1
• Period 3, Group 16
• Period 5, Group 11
• Period 2, 14