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Chapter 2.1

Chapter 2.1. Matter has observable properties. Properties – Characteristics that help us describe and identify matter. All matter has both Physical Properties Chemical Properties. Physical Properties. Property that can be observed without changing the identity of the substance.

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Chapter 2.1

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  1. Chapter 2.1 Matter has observable properties

  2. Properties – Characteristics that help us describe and identify matter. • All matter has both • Physical Properties • Chemical Properties

  3. Physical Properties • Property that can be observed without changing the identity of the substance. • Ex) color, texture, size, density, volume, melting point, boiling point, and magnetism

  4. Density • Amount of matter in a given volume of substance; how compact a substance is. • Density = mass Volume

  5. Physical Change • A change in physical characteristics without forming a new substance.

  6. Physical Changes

  7. Chemical Properties • Are what enable matter to change, in the presence of other substances, into a new substance with different properties. • Ex.)the ability to burn, reactivity to acid and to water

  8. Four Ways Scientists Know a Chemical Change has occurred: Color change Powdery solid settles out of a liquid Formation of Bubbles; Gas is produced Change in Temperature – giving off heat or light Production of an Odor

  9. Chemical Changes

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