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Warm Up 9/16. Grab a yellow warm up sheet from stool SWOD: PHYSICAL CHANGE pg 19 Review your grades from the grade list. Announcements Midterms due tomorrow @ 3pm. Marshmallow. Give me some physical properties of the object Tell me some chemical properties of the object.
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Warm Up 9/16 • Grab a yellow warm up sheet from stool • SWOD: PHYSICAL CHANGE pg 19 • Review your grades from the grade list
Announcements Midterms due tomorrow @ 3pm
Marshmallow • Give me some physical properties of the object • Tell me some chemical properties of the object
Properties Review • 2 different types Read these examples
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 • Alkali Metals Reacting Video different arrangement of atoms can’t get original atoms back Physical vs. Chemical
Property vs. Change • Property = description or could change in the future • Change = change • 5 evidences of a chemical change • PCOGT – • 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
What are the 5 evidences of a chemical change? • Precipitate • Color change • Odor/smell • Gas produced • Temperature change
What is an acronym? What about a phrase to help you remember things • D.A.R.E • C.S.I. • Please excuse my dear aunt sally • Every Good Boy Does Fine • Kings play chess on fat guys stomachs • “Pirates Can Obtain Great Treasures”
Come up with an acronym to help you remember these 5 changes Osos Can Produce Grande Turds Temperature change Color change Precipitate Odor/smell Gas produced