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 Solid Gas Liquid

Other AOD C.8.3 Compare chemical and physical 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.

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

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?

“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???

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.

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.

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?

Verbal Assessment & Assignment Section Review (p.60): 1, 2, 5 Workbook (pp.13-14): 7-28