Name:
Build an Atom
Have your periodic table out.
https://phet.colorado.edu/en/simulation/build-an-atom
Press play.
Select symbol.
Using your periodic table as a guide:
1a) Build a Helium atom (correct numbers of protons, neutrons, electrons)
1b) Draw the Lewis diagram of the Helium atom below. Write the correct numbers of protons,
neutrons, electrons next to your diagram.
2a) Build an Oxygen atom
2b) Draw the Lewis diagram of the Oxygen atom below. Write the correct numbers of protons,
neutrons, electrons next to your diagram.
2c) Build an Oxygen ion
2d) Draw the Lewis diagram of the Oxygen ion below. Write the correct numbers of protons,
neutrons, electrons next to your diagram.
3a) Build a Beryllium atom
3b) Draw the Lewis diagram of the Beryllium atom below. Write the correct numbers of protons,
neutrons, electrons next to your diagram.
3c) Build a Beryllium ion
3d) Draw the Lewis diagram of the Beryllium ion below. Write the correct numbers of protons,
neutrons, electrons next to your diagram.
4) Why weren’t you asked to draw a Helium ion?
End the simulation.
5a) Draw the Lewis diagram for the Chlorine atom below.
5b) Draw the Lewis diagram for the Chlorine ion below.
6a) Draw the Lewis diagram for the Sodium atom below.
6b) Draw the Lewis diagram for the Sodium ion below.
7) What can be said about the valence electrons for the Lewis diagrams of alkali/alkaline earth
metal ions?
8) What can be said about the valence electrons for the Lewis diagrams of non-metal ions?