pHet

Atomic Structure

• Google phet• It will be your first result, phet.colorado.edu/• Click on Play with sims…• Click on the Chemistry simulation.• Click on Build an Atom.• Click on Run Now!• Open the 3 + green boxes

Directions & QuestionsMake a Fluorine Atom

1. Start by adding protons to the Nucleus How many did you need to make Fluorine? _______ Why is this Atom unstable? ________________________________

2. Add Neutrons to the Nucleus How many neutrons were needed to make the atom stable? _______

3. Look at the Element info on the side What it the Atomic No. of Fluorine? ________ What is the Atomic Mass? ________ What is the charge? _______ Why is there a charge?

What is a charged atom called? _______4. Add 2 electrons to the 1st orbital

what is the new charge? _______5. Make the atom neutral.

How many total electrons are there TOTAL in the atom? _______ Does this number match the protons? ________ Why?

Are there more neutrons than protons? _______ Why doesn’t this cause a charge?

Directions & QuestionsMake a Fluorine Atom

1. Start by adding protons to the Nucleus How many did you need to make Fluorine? _______ Why is this Atom unstable? ________________________________

2. Add Neutrons to the Nucleus How many neutrons were needed to make the atom stable? _______

3. Look at the Element info on the side What it the Atomic No. of Fluorine? ________ What is the Atomic Mass? ________ What is the charge? _______ Why is there a charge?

What is a charged atom called? _______4. Add 2 electrons to the 1st orbital

what is the new charge? _______5. Make the atom neutral.

How many total electrons are there TOTAL in the atom? _______ Does this number match the protons? ________ Why?

Are there more neutrons than protons? _______ Why doesn’t this cause a charge?