Science Concepts and Terms

What is the definition of Quantitative Observations?

• Observations that deal with qualities

• Measurements; an observation that deals with a number or amount

• Observations based on personal opinions

• Observations that cannot be measured.

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Inferring involves making an interpretation based on observations and ________.

• future predictions

• prior knowledge

• random guesses

• numerical data

What is the study of matter and energy and how they interact?

• Biology

• Chemistry

• Physics

• Astronomy

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A possible answer to a scientific question or explanation for a set of observations is called a ____.

• Theory

• Hypothesis

• Law

• Conclusion

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Fill in the blank: 'Precision' refers to how close a group of measurements are to ______.

• the true value

• each other

• the average

• the median

What is the 'Mean' in a set of data?

• How close a measurement is to the true or accepted value

• How close a group of measurements are to each other

• Numerical average

• Middle number in a set of data.

A characteristic of a pure substance that describes its ability to change into different substances is known as a ________.

• Physical Property

• Chemical Property

• Element

• Atom

What is a Chemical Bond?

• A force of attraction between two atoms

• A neutral particle made of two or more atoms

• A pure substance made of two or more elements

• Shows the elements in the compound and the ratio of atoms.

What is the measure of the force of gravity on an object?

• Mass

• Weight

• Volume

• Density

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What is the definition of Density?

• The ratio of the mass of a substance to its volume

• The amount of space a substance occupies

• The weight of a substance

• The color of a substance