Subject Area - 3:
Science and Technology and Engineering Education
- Standard Area - 3.2: Physical Sciences: Chemistry and Physics
- Organizing Category - 3.2.A: Chemistry
- Course - 3.2.C.A: CHEMISTRY
Standard - 3.2.C.A5
MODELS
Recognize discoveries from Dalton (atomic theory), Thomson (the electron), Rutherford (the nucleus), and Bohr (planetary model of atom), and understand how each discovery leads to modern theory.
Describe Rutherford’s “gold foil” experiment that led to the discovery of the nuclear atom. Identify the major components (protons, neutrons, and electrons) of the nuclear atom and explain how they interact.
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Assessment Anchor - CHEM.A.2
Atomic Structure and the Periodic Table
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Anchor Descriptor - CHEM.A.2.1
Explain how atomic theory serves as the basis for the study of matter.
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Eligible Content - CHEM.A.2.1.2
Differentiate between the mass number of an isotope and the average atomic mass of an element.
