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Bellringer

Bellringer. Use a Venn diagram to compare solids, liquids, and gases, based on shape, volume, and whether or not they are easily compressed (or forced into a smaller space). http://phet.colorado.edu/en/simulation/states-of-matter. Properties of Matter. Objectives:

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Bellringer

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  1. Bellringer • Use a Venn diagram to compare solids, liquids, and gases, based on shape, volume, and whether or not they are easily compressed (or forced into a smaller space). • http://phet.colorado.edu/en/simulation/states-of-matter

  2. Properties of Matter Objectives: 1.1 Distinguishing between intensive and extensive properties of matter Other AOD C.8.3 Compare chemical and physical properties of matter.

  3. Demos • Water + alcohol • Marbles + water • Can anything else be added to the marbles and water? • Relationship to solids, liquids, and gases?

  4. Gas and Vapor • “Gas” applies to substance that is naturally in the gaseous state at room temperature. • “Vapor” is the correct term for the gaseous state of a substance found in the solid or liquid state at room temperature. • What is steam?

  5. “Matter” and “Substance” • Define “matter”. • Def.: anything that has mass and takes up space. • Def. of substance: matter that has a uniform and unchanging composition. • In my words: Substance is matter that has a chemical formula (i.e., H2O or NaCl) • What about pool water or ocean water???

  6. Physical Properties • Def.: a characteristic that can be measured or observed without changing the sample’s composition • Name some physical properties of a pencil. • Name some physical properties of a rose. • May include density, color, odor, taste, hardness, conductivity, malleability, shape, mass, length, volume, melting point, boiling point, state of matter at room temperature.

  7. Extensive vs. Intensive Properties • Extensive properties are dependent upon the amount of substance present. • Intensive properties are NOT dependent upon the amount of substance present. • Use the list of physical properties from the previous slide, and classify each property as either extensive or intensive.

  8. Chemical Properties • Def.: the ability (or inability) of a substance to combine with or change into one or more other substances • What happens to iron when exposed to air? • Iron exposed to nitrogen? • P. 57: Look at Figure 3.3. What physical and chemical properties of copper are evident in these photos?

  9. Assessment • Section Review (p.60): 1, 2, 5

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