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Subject Area - 3:
Science and Technology and Engineering Education
  • Standard Area - 3.2: Physical Sciences: Chemistry and Physics
  • Organizing Category - 3.2.A: Chemistry
  • Grade Level - 3.2.10.A: GRADE 10
Standard - 3.2.10.A5

MODELS

Describe the historical development of models of the atom and how they contributed to modern atomic theory.

SCALE

Apply the mole concept to determine number of particles and molar mass for elements and compounds.

  • Assessment Anchor - CHEM.B.1 The Mole and Chemical Bonding
    • Anchor Descriptor - CHEM.B.1.1 Explain how the mole is a fundamental unit of chemistry.
    • Anchor Descriptor - CHEM.B.1.2 Apply the mole concept to the composition of matter.
      • Eligible Content - CHEM.B.1.2.1 Determine the empirical and molecular formulas of compounds.
      • Eligible Content - CHEM.B.1.2.2 Apply the law of definite proportions to the classification of elements and compounds as pure substances.
      • Eligible Content - CHEM.B.1.2.3 Relate the percent composition and mass of each element present in a compound.
    • Anchor Descriptor - CHEM.B.1.4 Explain how models can be used to represent bonding.
      • Eligible Content - CHEM.B.1.4.1 Recognize and describe different types of models that can be used to illustrate the bonds that hold atoms together in a compound (e.g., computer models, ball‐and‐stick models, graphical models, solid‐sphere models, structural formulas, skeletal formulas, Lewis dot structures).
      • Eligible Content - CHEM.B.1.4.2 Utilize Lewis dot structures to predict the structure and bonding in simple compounds.
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