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States of Matter

Daily Inquiry – Monday, August 13 Create a “KWL” chart. Fill in the first two columns concerning what you know and what you want to know concerning the states of matter. States of Matter. States of Matter Activity – 3 minutes (a) Three groups Visually simulate your state to class.

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States of Matter

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  1. Daily Inquiry– Monday, August 13Create a “KWL” chart. Fill in the first two columns concerning what you know and what you want to know concerning the states of matter.

  2. States of Matter States of Matter Activity – 3 minutes (a) Three groups • Visually simulate your state to class

  3. States of Matter

  4. Comparison of Solids, Liquids, and Gases • Particle distance • Usually closest together in solid state • Exception? • Particle energy • Particles in gas state have greatest energy • Attractive forces between particles • Greatest in solid state

  5. Other States? • Plasma state • high temperature state in which atoms lose most of their electrons (super heated gas) • examples: sun, fluorescent bulbs • Bose-Einstein condensate • ultra low temperatures – near absolute zero • close to point at which atoms stop moving

  6. Changes in State Matter has the ability to change state. What causes this to happen?

  7. Properties of Matter Properties can be classified as either extensiveorintensive. Extensive- depend on the amount of matter Ex: volume and mass Intensive - do not depend on the amount Ex: density, melting point, conductivity

  8. Properties of matter can also be grouped into two general types: physical propertiesandchemical properties Physical properties– can be observed or measured without changing the identity of a substance. Ex: color, melting point Chemical property– characteristic that once noticed alters the identity of the substance. Ex: flammable, corrosive, “reacts with”

  9. What Do You Think? The following is observed by a chemistry student: A 2.3 gram strip of shiny magnesium, which has a density of 5.6 g/mL, is placed in 25 mL of concentrated hydrochloric acid. The magnesium reacts releasing bubbles as it comes in contact with the acid. From this passage, identify the chemical and physical properties observed. Determine if each property is intensive or extensive.

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