Properties of Matter Review

Front

What is a dependent variable?

Back

The dependent variable is the outcome or response that is measured in an experiment, which changes in response to the independent variable.

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What is an independent variable?

Back

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

Front

What is a control variable?

Back

Control variables are the factors that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

What is a chemical change?

Back

A chemical change is a process that transforms one or more substances into a new substance with different properties.

Front

What is a precipitate?

Back

A precipitate is a solid that forms when two liquids are mixed together in a chemical reaction.

Front

How does heat affect a chemical reaction?

Back

Heat generally speeds up a chemical reaction by increasing the energy of the molecules involved.

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

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What are the three states of matter?

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The three states of matter are solid, liquid, and gas.

Front

What is the difference between a physical change and a chemical change?

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A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.