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Quiz: Physical/Chemical Change Quiz begin 2 min after the bell rings – feel free to ask questions during this time if you’ve got any! You have 4 min to work on the quiz T 9/23 and W 9/24
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Identify the number of sig. figs. : 21.70 0.0001500 5400 1710. Round the following number to 3 sig. figs. 7512370 7500000 (This one is tricky!) Change the following number to sci. not, and identify the number of sig. figs. 0.0012500 8701520.0 Warm – up # 5: Sig. figs. Heads up: warm up page will be due the day of the test---have them ALL!!
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Trade your homework assignment with your shoulder partner. Let’s grade it! Trade & Grade
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Card Sort 1.Sort the cards into FIVE different reaction types. Each reaction type should have FOUR cards associated with it (one of each color) 2.For each reaction type, copy down the information from each card on notebook paper notes. 3.Come up with names for each reaction type.
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Decomposition
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Synthesis, Addition, or Combination
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Combustion
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Single Replacement
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Double Replacement
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Decomposition Synthesis (Combination) Combustion Single Replacement Double Replacement Types of Chemical Reaction Compounds break down Compounds are formed Carbon compounds burning in oxygen, forms water and CO 2 One element replaces another in a compound Two elements switch places in two compounds
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Page 15: identify reaction types #1-7 Element and LoC test next class! Reminders: Sept 29/30 (Mon/Tues) Math and Matter Test 2 Karma Questions: 6, 7, 8, 9 are due on test day (use same sheet you turned in for the first set of questions) Homework
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