Chapter 1 notes
- 1. ChemistyChapter 1Activities of Science
- 2. Applying a Scientific MethodQuestions Chemistry Tries to AnswerWhat is this matter that I have?Properties of matterKnown vs. unknownHow much do I have?Various concentrationsWhat chemicals are present in what amounts?How can I change it?Know what you have and change it into someone more useful.
- 3. How much can I get and how fast?Know effects and speed of chemical reactionThe more you know, the closer you come to solving problemsThe legacy of matterSame particles found now have existed for hundreds of yearsUnderstand matter and its changes
- 4. Regularities among Facts Obtaining factsMake careful observationsInferenceInterpretation of observationClassificationCategorize informationNotice things that are common to large groupsUsing a scientific methodHypothesis: temporary explanationTheory: explanation accounts for past events
- 5. Developing TheoriesModels – representations that convey information about real itemsPart 1 ReviewQuestions 1 – 5 Page 8
- 6. Using Mathematical KnowledgeQuantityProperty that can be measured and described by a number and a unit that names the standard useMathematicsRelationships among numbers
- 7. Math as a ToolNumbersRefer to anythingOnly like quantities can be added or subtractedUnitsName the quantity measured
- 8. SI Units in MeasurementSame numerical base as the decimal systemEvery unit is 10x more than the lastSI base units:
- 10. Tools for AnalysisRead Section 1.5 – 1.7Take notes as you readComplete Practice Problems 15 & 16 Make sure to show your work!Turn both in at the end of the hour…..
- 11. Exploring MatterProperties of MatterPhysical ChangesSubstance changes form Solid, liquid, gasChanges that are easy reversedChemical ChangesChanges are not reversibleProduce a new kind of matter
- 12. Solids, Liquids, GasesSolidParticles are arranged in orderly mannerParticles are packed closely togetherParticles do not move from place to placeMaintains specific shapeVolume is almost entirely of particles themselvesCan not be compressed any further
- 13. LiquidsSubstances that flowParticles are free to slide past one another and continually change positionsParticles are in constant motionConform to the shape of their containersCompressing does not significantly change volume
- 14. GasesParticles in constant motionMotion of particles is randomParticles are not neatly arrangedParticles move throughout containerWithout container, disperse freelyPart 4 ReviewQuestions 25 - 30