Chapter 1c - Chapter 1 Matter Measurement and Problem Solving Webcourses Changes in Matter Physical Changes Chemical Changes Changes that alter state or

Chapter 1c - Chapter 1 Matter Measurement and Problem...

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Chapter 1 Matter, Measurement, and Problem Solving
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Webcourses
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Physical Changes Changes in Matter Chemical Changes Changes that alter state or appearance (not composition) Changes that alter chemical composition
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Physical Changes When water boils, it changes into a gas Its chemical composition is not changed Water molecules are the same in the gas phase as in the liquid phase
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Chemical Changes The rusting of iron is a chemical change The iron atoms combine with oxygen in the air to form a different chemical substance (iron oxide)
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Properties of Matter Physical properties are the characteristics of matter that can be changed without changing its composition – characteristics that are directly observable – Examples: state, size, mass, volume, color, odor, melting point, boiling point, density, solubility Chemical properties are the characteristics that determine how the composition of matter changes as a result of contact with other matter or the influence of energy – characteristics that describe the behavior of matter – Examples: Flammability, corrosiveness, bleaching power explosiveness
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Question 7: Liquid water A B C The diagram on the left represents liquid water.
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