Science

7th

grade

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Gable's Molecule, Compound, Chemical Equation

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20 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Which of the following chemical formulas represents a compound?

    C

    O2

    CH3CHO

    H2

  • 2. Multiple Choice
    30 seconds
    1 pt
    Which statement best describes an element?
    made from mixture 
    thousands in the world
    pure, made of only one atom
    can be separated 
  • 3. Multiple Choice
    30 seconds
    1 pt

    Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –

    a gas at room temperature.

    made of two or more different elements.

    given off by green plants.

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