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Midterm Study Guide: Physical and Chemical Properties of Mothballs

Prepare for tomorrow's midterm by reviewing the properties of mothballs. Understand the differences between physical and chemical properties. Physical changes involve size, shape, or state, while chemical changes indicate a complete transformation that cannot be reversed. Explore examples such as the gummy bear experiment and evidence of chemical changes, including changes in color, odor, gas formation, solid formation, and temperature change. Don't forget to watch the linked videos for additional insights!

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Midterm Study Guide: Physical and Chemical Properties of Mothballs

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  1. 9/17 Notes start Midterms due tomorrow @ 3pm • Review Mothball Lab • Observed the _____________ of the mothball? • Did the atoms ever change? • What changed about the mothball?

  2. Give me some physical properties of the object • Tell me some chemical properties of the object

  3. Properties Review • 2 different types Read these examples 

  4. Physical and Chemical Properties

  5. Changes • When it actuallychanges • Physical Change: changes size, shape, color, &/or state of matter (but its still the same thing) • http://www.youtube.com/watch?v=6egx7jHxmwM • same atoms • Chemical Change: changes what it completely is, chemical reactions REACTS • gummy bear • http://www.youtube.com/watch?v=uixxJtJPVXk different arrangement of atoms  can’t get original atoms back

  6. Property vs. Change • Property = description or could change in the future • Change = change • 5 evidences of a chemical change • PCOGT – “Pirates can obtain great treasures” • Precipitate (solid forms) • Color change • Odor(smell) • Gas forms • Temperature change • Evidence of a chemical change • http://resources.educ.queensu.ca/science/main/concept/gen/g09/N.%20Sabet/precipitation.jpg

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