Chem Get Atomic Structure Simulation WS stamped off if you did not do so last class. Today: Atomic Structure Practice Finish Unit 2 Corrections by end.

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Solving atomic calculations: Working with: – Elements – Isotopes – Ions – Atomic # – Atomic mass – Charge.

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Presentation transcript:

Chem Get Atomic Structure Simulation WS stamped off if you did not do so last class. Today: Atomic Structure Practice Finish Unit 2 Corrections by end of week!

What is important about the atomic number? Unique for each element = # protons in nucleus

How do you figure out the number of: Protons in an atom? # protons = the atomic number Electrons in an atom? # electrons = # protons FOR NEUTRAL ATOMS, only! Neutrons in an atom? # neutrons = mass – # protons

What are Isotopes? Isotopes are different forms of the same element that have a different mass Isotopes have the same # protons but different # neutrons

What are Ions? Ions are atoms that have a positive or negative charge In an Ion, the number of protons and electrons are not equal

Standard Nuclear Notation Note: for ions, the charge (+ or -) is indicated in the upper right corner

What is the ONE THING that determines the identity of an atom? # of protons (atomic #)

Build an Atom Phet Click on “game” Complete the 4 levels and get it stamped off.

Practice