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Grade 07 Science - EC: S7.C.1.2.1

Grade 07 Science - EC: S7.C.1.2.1

Continuum of Activities

Continuum of Activities

The list below represents a continuum of activities: resources categorized by Standard/Eligible Content that teachers may use to move students toward proficiency. Using LEA curriculum and available materials and resources, teachers can customize the activity statements/questions for classroom use.

This continuum of activities offers:

  • Instructional activities designed to be integrated into planned lessons
  • Questions/activities that grow in complexity
  • Opportunities for differentiation for each student’s level of performance

Grade Levels

7th Grade

Course, Subject

Science

Activities

  1. In terms of a chemical reaction, define a reactant.

  2. In terms of a chemical reaction, define a product.
  1. Summarize what occurred in the chemical reactions below.
    1. N2 + O2 → 2NO2
    2. CH4 + 2O2 → CO2 + 2H2O
  1. What is the chemical equation for photosynthesis?  Write a description to explain the process that occurs during this chemical reaction.

  2. What is the chemical equation for cellular respiration?  Write a description to explain the process that occurs during this chemical reaction.

Answer Key/Rubric

  1. A reactant is a substance that is present before a chemical reaction takes place.

  2. A product is a substance that is formed when two or more reactants interact during a chemical reaction.
  1. a.  Acceptable responses may include, but are not limited to:
  • The reactants are nitrogen and oxygen.
  • A molecule of 2 nitrogen atoms reacted with a molecule of 2 oxygen atoms.
  • A chemical change occurred and nitrogen dioxide was produced.
  • Nitrogen dioxide is the product of this chemical reaction.
  • This is a synthesis reaction.

b.  Acceptable responses may include, but are not limited to:

  • Methane and oxygen are the reactants.
  • Methane reacted with oxygen to form carbon dioxide and water.
  • Carbon dioxide and water are the products of this chemical reaction.
  • This is a combustion reaction.
  1. Acceptable responses may include, but are not limited to:

    • The chemical equation for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2
    • Energy from sunlight is needed in order for this reaction to take place.
    • Carbon dioxide and water are the reactants.
    • A plant uses carbon dioxide, water, and energy from the sun to make its food.
    • Glucose and oxygen are the products.
    • The plant uses the glucose as food.
    • The plant releases oxygen back into the atmosphere.

  2. Acceptable responses may include, but are not limited to:

    • The chemical equation for cellular respiration is C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy
    • The reactants are glucose and oxygen.
    • A cell uses glucose and oxygen to produce carbon dioxide, water, and energy.
    • Carbon dioxide, water, and energy are the products.
    • The cell uses water and energy to perform its functions and release carbon dioxide as a waster product.
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