Scientific Method & Properties of Water

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What is surface tension?

Back

Surface tension is the tightness across the surface of water that allows objects, like paper clips, to float. It is caused by the cohesive forces between water molecules.

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What is a hypothesis?

Back

A hypothesis is a possible answer or prediction to a problem that can be tested through experimentation.

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What is data in the context of an experiment?

Back

Data refers to the information that is recorded during an experiment, which can be analyzed to draw conclusions.

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Why does ice float on water?

Back

Ice floats on water because, as water freezes, it expands and its density decreases, making it less dense than liquid water.

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What is the dependent variable in an experiment?

Back

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 scientific method?

Back

The scientific method is a systematic process used for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is polarity in water?

Back

Polarity in water refers to the distribution of electrical charge, where one end of the molecule has a slight positive charge and the other end has a slight negative charge, leading to hydrogen bonding.

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What is adhesion?

Back

Adhesion is the attraction between different substances, such as water molecules sticking to a glass surface.

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What is capillary action?

Back

Capillary action is the ability of water to flow in narrow spaces without the assistance of external forces, often seen in plants as water moves up from roots to leaves.

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What is a control variable?

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A control variable is a factor that is kept constant throughout an experiment to ensure that the results are due to the independent variable.