Build an Atom PhET Worksheet

A "nucleon" is *any* particle that exists in a nucleus. Which of the particles below can be considered a "nucleon"? Mark all that apply.

• proton

• electron

• neutron

Add three nucleons to your atom in the PhET. Which of the elements below *can* you generate by adding three nucleons to the nucleus?

• Hydrogen

• Hydrogen or Helium

• Helium or Lithium

Tags

NGSS.HS-PS1-8

Create an atom that uses 3 protons and 5 neutrons. What is the mass number of the atom?

• 8

• 5

• 3

• 15

Use the atom you made that has 3 protons and 5 neutrons. What is the atomic number of the atom?

• 3

• 5

• 8

• 2

Use the atom you made that has 3 protons and 5 neutrons. How could you describe this atom in terms of its charge? It is a...

• Neutral atom

• Positive Ion

• Negative ion

Use the atom you made that has 3 protons and 5 neutrons. What could you do to neutralize this atom?

• Add a number of electrons.

• Remove a number of electrons.

Use the atom you made that has 3 protons and 5 neutrons. Neutralize the atom. How many electrons did you need to add?

• 3

• 2

• 5

• 8

What is the identity of your neutralized atom?

• Lithium

• Sodium

• Beryllium

• Helium

How many energy levels, or electron shells, does your neutral atom have?

• 2

• 1

• 3

• 4

What row is this element on in the periodic table?

• 2

• 1

• 3

• 4