JJHS Chemistry Resources

Atomic Structure I

REFERENCE TABLES USED: PERIODIC TABLE

Click here for FLASHCARDS on Atomic Structure

Click here for VIDEOS on Atomic Structure

Click here for Practice Problems on Atomic Structure

Elements and their isotopes

Brightstorm videos on the ATOM

Build and Atom

Rutherford's Scattering Experiment

Isotopes & Atomic Mass

IonsIons are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).

Atomic Symbols, Atomic Numbers, and Mass NumbersLearners read definitions of atomic symbols, atomic numbers, and mass numbers and then answer questions about the number of neutrons, protons, and electrons in select elements.

Calculation of Atomic Weight from Isotopic CompositionLearners examine the method for calculating the atomic weight of copper from the natural percent composition of each of its two isotopes.

Mass Spectrometry Interactive Activity

Isotope Interactive Activity

(what if you were made of different isotopes)

Classroom Resources | Isotopes & Calculating Average Atomic Mass | AACTAACT is a professional community by and for K–12 teachers of chemistry

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