Warm-Up 2/26/14 Make sure that you have sketches in your concept map for Element, Compound, Heterogeneous, and Homogeneous!

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Presentation transcript:

Warm-Up 2/26/14 Make sure that you have sketches in your concept map for Element, Compound, Heterogeneous, and Homogeneous!

Describing Matter Wednesday 2/26/14

Physical Properties and Chemical Properties

Physical Property Characteristic of a material that you can observe without changing the substance Examples: color, size, shape, density, melting point, boiling point

Chemical Property Characteristic of a substance that indicates whether it can undergo a certain chemical change. Examples: flammable, combustible, may react to light, acidic

Physical Change A change in size, shape, or state of matter. Substance does not change identity. Examples: melting ice, cutting paper, breaking glass

Chemical Change A change of one substance into a new substance. Examples: rusting metal, fireworks explode, baking cookies

Law of Conservation of Mass The mass of all substances before and after a chemical change must stay the same Matter can not be created or destroyed (just transformed!)

Your Job Start working on the Newspaper assignment. You will have tomorrow to finish it. Notes go on pg. , Newspaper on pg. QUIZ tomorrow