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Matter

Matter. Chemistry 332 O’Dette. What is matter?. Anything that has mass and takes up space All matter is made of submicroscopic particles called atoms Which of the following are classified as matter?. A Tree. Air. Heat From A Fire. Types of Matter.

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Matter

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  1. Matter Chemistry 332 O’Dette

  2. What is matter? • Anything that has mass and takes up space • All matter is made of submicroscopic particles called atoms • Which of the following are classified as matter? A Tree Air Heat From A Fire

  3. Types of Matter • Pure Substances – composed of only one type of atom or molecule • Element – composed of only one type of atom • EXAMPLE: Gold – Au • Found on the Periodic Table • Compound – composed of two or more elements chemically bonded together • EXAMPLE: Water – H2O • One oxygen atom is chemically bonded to two hydrogen atoms

  4. Pure Substance (Continued) • Molecule – two or more atoms chemically combined • All compounds are molecules. • Not all elements are molecules. • EXAMPLE: Oxygen versus Aluminum

  5. Types of Matter • Mixture – two or more pure substances physically combined • Homogeneous – uniform composition, aka solution • Example: Salt water

  6. Mixtures (Continued) • Heterogeneous – does not have a uniform composition, two or more distinct phases • Example: Raisin Bran

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