Skip to Main Content

Standards Detail

Search using a saved search preference or by selecting one or more content areas and grade levels to view standards, related Eligible Content, assessments, and materials and resources.

Limit your search to no more than three grades, subjects, or courses, and ensure that you have selected at least one grade and subject or one course.

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


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.

  • Assessment Anchor - CHEM.A.1 Properties and Classification of Matter
    • Anchor Descriptor - CHEM.A.1.1

      Identify and describe how observable and measurable properties can be used to classify and describe matter and energy.

      • Eligible Content - CHEM.A.1.1.1 Classify physical or chemical changes within a system in terms of matter and/or energy.
      • Eligible Content - CHEM.A.1.1.2 Classify observations as qualitative and/or quantitative.
      • Eligible Content - CHEM.A.1.1.3 Utilize significant figures to communicate the uncertainty in a quantitative observation.
      • Eligible Content - CHEM.A.1.1.4 Relate the physical properties of matter to its atomic or molecular structure.
      • Eligible Content - CHEM.A.1.1.5 Apply a systematic set of rules (IUPAC) for naming compounds and writing chemical formulas (e.g., binary covalent, binary ionic, ionic compounds containing polyatomic ions).
Please wait...