Chemistry

9th

grade

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Scientific Method

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Suppose you are performing an experiment measuring the maximum amount of table salt that can be dissolved in water as the temperature of the water increases. In this experiment, what would be the dependent and independent variables?

    temperature is the independent variable; amount of table salt is the dependent variable

    amount of water is the independent variable; amount of table salt is the dependent variable

    temperature is the independent variable; amount of water is the dependent variable

    amount of table salt is the independent variable; temperature is the dependent variable

  • 2. Multiple Choice
    30 seconds
    1 pt

    A theory is a ____.

    proposed explanation for an observation

    well-tested explanation for a broad set of observations

    summary of the results of many observations

    procedure used to test a proposed explanation

  • 3. Multiple Choice
    30 seconds
    1 pt

    Which of the following was a major contribution to chemistry by Antoine Lavoisier?

    Metals lost mass after they were burned.

    He showed that oxygen is required for material to burn.

    He encouraged scientists to form explanations based on philosophical arguments.

    He developed the science of alchemy.

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