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Notes gb lab 07 chemical detective


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Notes gb lab 07 chemical detective

  1. 1. Notes
  2. 2.  The student will: Distinguish the differencebetween a chemical and a physicalchangeInvestigate and understandphysical and chemical changes inmatter
  3. 3.  Investigate and understand chemicalformulas and the types of bondsfound in simple compounds Understand the Law of Conservationof Mass
  4. 4.  The Law of Conservation ofMass/Matter Chemical Change Physical Change Chemical Formula Chemical Equation Reactant Product
  5. 5.  States: Mass/matter isneither lost orgained during areaction, thoughit may change insubstance, form,phase or state
  6. 6.  When a substancechanges its size or shapeor phase/state of matterbut still retains theproperties of the originalsubstance Paper being torn intolittle pieces
  7. 7.  When a newsubstance is createdthrough thecombination ofchemicals or energy▪Paper burning andturning into ash(carbon)
  8. 8.  The way asubstance orcompound isexpressedsymbolically▪CO2 is CarbonDioxide▪H2O isWater▪C6H12O6 isGlucose
  9. 9.  A math-likeequationthat showshowchemicalsarecombinedC + O2  CO2▪ means“Yields”
  10. 10.  Located on theleft side of theequation, thesechemicalscombine/bondtogether or reactwith each otherCarbon (C) + 2Oxygen atoms(O2)▪C + O2 CO2
  11. 11.  Located on theright side of theequation, this isthe outcome ofthe reactionC + O2  CO2▪Carbon (C )+ 2Oxygen atoms (O2)= Carbon Dioxide(CO2)
  12. 12. Activity Chemical list Clues to ChangeHow will you build opportunities for repeated practice of the skill into your plan?What methods will you use to get feedback on your performance (from other professionals and from students)?What data will you collect to demonstrate your progress?What indicators will demonstrate that you have achieved (or made progress) toward) your goal?
  13. 13. Now lets work on the Labactivities
  14. 14. Notes (Cont,)
  15. 15.  Simply mixing materials does notalways produce a chemical change.There must be evidence of achemical change▪Measurable▪Observable
  16. 16.  Same substance only in a different: Shape Size Phase/State of Matter▪ Solid▪ Liquid▪ Gas
  17. 17. A New substance mustbe formed!!!!!!!
  18. 18. One or more of theseoccurs
  19. 19. Color Change
  20. 20. Gas Formation(Bubbles/Fizzing)
  21. 21. Temperature Change(Increase/Decrease)
  22. 22. Precipitate Formation▪An insoluble compound forms at thebottom