Chemistry, Science

9th

grade

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Benchmark Prep-Chemistry Standards CFM

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13 questions

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  • Multiple Choice
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    3 minutes
    1 pt

    Which of these changes can occur in a substance as energy of particles decreases?

    The substance evaporates (liquid to a gas)

    The substance melts (solid to a liquid)

    The substance condenses (gas to a liquid)

    The substance sublimes (solid to a gas)

  • Multiple Choice
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    3 minutes
    1 pt

    During an experiment, a class heated a balloon that had an initial (starting) circumference of 25 cm. The circumference increased to 27 cm. Which is the best conclusion that can be drawn?

    The energy of the molecules inside the balloon remained the same

    The molecules inside the balloon were escaping outside

    The molecules inside the balloon lost energy to the outside

    The molecules inside the balloon gained energy from the heat

  • Multiple Choice
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    3 minutes
    1 pt

    Emily made a chart that included physical and chemical changes. Which change should be categorized as a chemical change?

    a gold bar melted

    iron becomes rusty

    lake water evaporates

    a granite rock is polished

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