G07 Fall Semester Exam Review

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What is an independent variable in an experiment?

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The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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What is a dependent variable in an experiment?

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The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

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What is the total number of atoms in the chemical formula Co(NO₃)₂?

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9

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What is a chemical change?

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A chemical change is a process where one or more substances are transformed into different substances with different properties.

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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What is a dilute solution?

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A dilute solution is a solution that has a lot more solvent than solute.

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What is concentration of a solution?

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Concentration of a solution is the amount of solute in a specific amount of solvent.

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What is the difference between solute and solvent?

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The solute is the substance that is dissolved in a solution, while the solvent is the substance that does the dissolving.

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What happens to the growth rate of plants when exposed to classical music?

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The growth rate may increase or decrease depending on the specific conditions and the type of music.

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What is the role of control in an experiment?

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The control is a standard for comparison in an experiment, which helps to ensure that the results are due to the independent variable.