Review

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What is a solute?

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A solute is a substance that is dissolved in a solution. In a saltwater solution, salt (NaCl) is the solute.

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What is a solvent?

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A solvent is a substance that dissolves a solute. In a saltwater solution, water (H2O) is the solvent.

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What is the law of conservation of mass?

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The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it remains constant.

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What is a chemical change?

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A chemical change is a process where substances combine or break apart to form new substances, such as baking brownies.

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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, like melting ice.

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What is force?

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Force is a push or pull on an object that can cause it to move, stop, or change direction.

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What is mass?

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Mass is the amount of matter in an object, usually measured in grams or kilograms.

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What is an experiment?

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An experiment is a scientific procedure undertaken to test a hypothesis or demonstrate a known fact.

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What is a trial in an experiment?

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A trial is a single repetition of an experiment, used to gather data and test the hypothesis.

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What is the purpose of conducting multiple trials in an experiment?

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Conducting multiple trials helps to ensure the reliability and accuracy of the results.