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Catalyst August 3 3 + 3(5)

HW on your desk, please!. Catalyst August 3 3 + 3(5). What are the 2 characteristics of a good hypothesis? (Friday’s notes) What word should you use when writing a hypothesis to show that you have a reason for your guess? CHALLENGE SAT QUESTION!!!! (Try it!)

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Catalyst August 3 3 + 3(5)

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  1. HW on your desk, please! CatalystAugust 33 + 3(5) • What are the 2 characteristics of a good hypothesis? (Friday’s notes) • What word should you use when writing a hypothesis to show that you have a reason for your guess? • CHALLENGE SAT QUESTION!!!! (Try it!) CAUSE is to EFFECT as INDEPENDENTVARIABLE is to _____________________. Write in complete sentences! Don’t talk during the Catalyst!

  2. Objectives • By the end of today, SWBAT… • Dominate variables. • Identify lab equipment and describe their use. • Write a quality procedure.

  3. Today’s Agenda • Catalyst • HW check • Variables Blitz • Lab Equipment and Quick Safety Breakdown • Procedures + Mystery Goo! • Exit Question

  4. HW Check 4. IV = Amount of cigarette use / How many times a person smokes DV = Chance of developing lunch cancer / How likely person is to develop lunch cancer Constants = Type of cigarettes, Health of patients at start of study, Doctor checking for lung cancer, etc.

  5. HW Check 5. IV = Amount of breakfast eaten DV = ACT test scores Constants = Type of breakfast, Time breakfast is eaten, ACT test, Location of test, etc.

  6. HW Check 6. IV = Color of sugar water DV = How fast the water is drunk Constants = Amount of sugar, Amount of water, Type of food coloring, Size of container, etc.

  7. Doing SCiEnCE! • Question: “What’s going on around me?” • Hypothesis: “__________ BECAUSE __________.” • Variables: • IV – Changed by experimenter; CAUSE • DV – Changes as a result; Depends on IV; EFFECT • Constant – Stays the same

  8. IV, DV, and Constants • Dr. Brown wants to see if a medicine she invented will improve her patients’ health. So she gives 100 patients her new medicine, and records how long it takes for them to become healthy. IV = DV = Constants = Type of medicine Measure of health Amount of medicine…

  9. IV, DV, and Constants • Gavin thinks that water will evaporate faster in a warm place than a cool one. He puts out two identical bowls of water, one in a warm place and one in a cool place. Then, he times how long it takes the water to evaporate. IV = DV = Constants = Temperature of location Time for evaporation Amount of water…

  10. Chemistry Lab

  11. Chemistry Lab Beakers

  12. Chemistry Lab Beaker Tongs

  13. Chemistry Lab Graduated Cylinder

  14. Chemistry Lab Erlenmeyer Flask

  15. Chemistry Lab Flask Tongs

  16. Chemistry Lab Glass Funnel

  17. Chemistry Lab Micro Spatula and Scoop Spatula

  18. Chemistry Lab Stirring Rods

  19. Chemistry Lab Hand Test Tube Holder

  20. Chemistry Lab Test Tube Rack and Small Test Tubes

  21. Chemistry Lab Standard Test Tubes

  22. Chemistry Lab Test tube brushes

  23. Chemistry Lab Bunsen Burner

  24. Chemistry Lab Ring Stand and Clamps

  25. Chemistry Lab Wire Gauze with Ceramic Center

  26. Chemistry Lab Triple-Beam Balance

  27. Chemistry Lab Analytical Balances

  28. Chemistry Lab Mortar and Pestle

  29. Chemistry Lab • Droppers

  30. Chemistry Lab • Pipets and Pipet bulb

  31. Chemistry Lab • Thermometers

  32. Chemistry Lab • Wash bottle

  33. Safety Equipment • Goggles

  34. Safety Equipment • Apron

  35. Safety Equipment • Gloves

  36. Safety Equipment • Fire extinguisher

  37. Safety Equipment • Safety blanket

  38. Safety Equipment • Eye wash

  39. Safety Equipment • Safety shower

  40. What could happen if we don’t follow safety guidelines?

  41. Wear your safety goggles!

  42. Chemical burn….

  43. Frayed cord?Unattended fire?

  44. HOMEWORK, Pt 1:Safety Contract

  45. ONTO PROCEDURES!

  46. Importance of a Good Procedure JUST THINK ABOUT DRIVING! We must read and follow directions all the time…

  47. Importance of a Good Procedure Key Point #1: Anyone can understand and duplicate a good procedure. • Understand: The procedure is easy to read and has simple language • Duplicate: The procedure can be repeated

  48. When Things Go Wrong…

  49. When Things Go Wrong… Key Point #2: You must always have a plan while performing an experiment. • This prevents problems • It is important to always readALL directions and think before beginning an experiment ANTICIPATION

  50. Now, divide your paper into three sections. Words My definitions Ms. S’s definitions 1. Experiment 2. Materials 3. Procedure

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