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.2.3
Explain how periodic trends in the properties of atoms allow for the prediction of physical and chemical properties.
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Eligible Content - CHEM.A.2.3.2
Compare and/or predict the properties (e.g., electron affinity, ionization energy, chemical reactivity, electronegativity, atomic radius) of selected elements by using their locations on the periodic table and known trends.
