HChem, Unit 1 Vocabulary

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Hypothesis

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A proposed explanation for a phenomenon, to be tested through experimentation.

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Theory

Back

A well-substantiated explanation acquired through the scientific method and repeatedly tested and confirmed.

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Dependent Variable

Back

The variable that is measured and affected in an experiment.

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Independent Variable

Back

The variable that is changed or controlled in an experiment to test its effects on the dependent variable.

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Standardized Variable (constant)

Back

Variables that are kept constant to ensure that the experiment tests only the effect of the independent variable.

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Quantitative

Back

Data that can be measured and expressed numerically.

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Qualitative

Back

Data that describes qualities or characteristics and cannot be measured numerically.

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Line Graph

Back

A type of graph that uses lines to connect data points and show trends over time.

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Bar Graph

Back

A graph that represents data with rectangular bars with lengths proportional to the values they represent.

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Pie Chart

Back

A circular statistical graphic divided into slices to illustrate numerical proportions.