Exam 1: What Is Chemistry

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Physical properties are characteristics of matter that describe how matter changes form in the presence of other matter.

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Which of the following is not classified as matter?

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What is a theory? Provide an example.

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A theory is a general statement that explains a large number of observations. "All matter is composed of atoms" is a general statement, a theory, which explains many observations in chemistry.

What is matter? Explain by providing examples.

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A compound's physical and chemical properties are different than the physical and chemical properties of its constituent elements.

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What is a metal? How is it different from a nonmetal?

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Science is the process of knowing about the natural universe through observation and experiment.

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What is physical change? Provide an example.

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A(n) _____ refers to a substance that cannot be broken down into simpler chemical substances by ordinary chemical means.

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A combination of two or more substances that is so intimately mixed that the mixture behaves as a single substance is called a(n) _____.

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A _____ is a combination of more than one element.

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A physical change occurs when a sample of matter changes one or more of its physical properties.

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From the following, which is not an example of a chemical change? Be sure to explain your reasoning.

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_____ is the process of knowing about the natural universe through observation and experiment.

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A sample of matter that has the same physical and chemical properties throughout is called a _____.

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Which of the following is an example of a heterogeneous mixture?

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Carbonated water, before it is opened, is an example of heterogeneous mixtures.

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Solution is another word used to describe homogenous mixtures.

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What is meant by chemical properties of matter?

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Physics and astronomy are scientific fields concerned with the fundamental interactions between matter and energy.

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