Today’s Goals

1. Today’s Goals Fifth Grade Seminar

2. Goals • Finish up Goal Card • Finish up Creative Me • Done with #1 & #2… Thinking Skills • Mystery Powder Terms & Examples • Mystery Powder Observations & Note Taking • CLEAN UP • Stories to Solve – Lateral Thinking

3. Mystery Powders Fifth Grade Seminar

4. Mystery

5. Mystery • noun: mystery; plural noun: mysteries 1. something that is difficult or impossible to understand or explain. • synonyms: puzzle, enigma, conundrum, riddle, secret, problem • a person or thing whose identity or nature is puzzling or unknown. 2. • a novel, play, or movie dealing with a puzzling crime, esp. a murder. • synonyms: thriller, murder mystery, detective story/novel, murder story, crime

6. Powder

7. Powder • noun: powder; plural noun: powders 1. • fine dry particles produced by the grinding, crushing, or disintegration of a solid substance. • synonyms: dust, fine particles; talcum powder, talc

8. Unknowns - Chemistry

9. Unknowns - Chemistry • noun: unknown; plural noun: unknowns 1. • an unknown person or thing.

10. Mixtures

11. Mixture • noun: mixture; plural noun: mixtures • a substance made by mixing other substances together. synonyms: blend, mix, brew, combination, concoction; More composition, compound, alloy, amalgam

12. Observation

13. Fun Senses Tests • Go to Favorites on Internet & Word Document

14. Observation • noun: observation; plural noun: observations 1. • the action or process of observing something or someone carefully in order to gain information. • synonyms: monitoring, watching, scrutiny, examination, inspection, survey, surveillance, consideration, study, review. • the ability to notice things, especially significant details. 2. • a remark, statement, or comment based on something one has seen, heard, or noticed. • synonyms: remark, comment, statement, utterance, pronouncement, declaration.

15. Inference

16. Inference • noun: inference; plural noun: inferences 1. • a conclusion reached on the basis of evidence and reasoning. • synonyms: deduction, conclusion, reasoning, conjecture, speculation, guess, presumption, assumption, supposition, reckoning, extrapolation

17. Frame of Reference

18. Frame of Reference • noun: frame of reference; plural noun: frames of reference 1. • a set of criteria in relation to which measurements or judgments can be made. • "the observer interprets what he sees in terms of his own cultural frame of reference“ • This is based on what YOU already know.

19. Prediction • verb • To indicate in advance • foretell on the basis of observation, experience, or scientific reason

20. Observations + Inferences = Predictions A prediction may be right, or it may be wrong.

21. What Senses are used for Observation? 1. 2. 3. 4. 5.

22. What Senses are used for Observation? • Sight • Smell • Touch • Taste • Hear

23. Name some professions that work with unknowns. 1. 2. 3. 4. 5. 6. 7. 8. 9.

24. Name some professions that work with unknowns. • Scientists or Researchers • Doctors, • Veterinarians, • Laboratory Workers • Police, Detectives, FBI, CIA • Inventors • Mechanics • Archeologists

25. Make a list of all the white powders you can think of.

26. Stop Here….

27. The Seminar Seven • Flour (F) • Sugar (SU) • Powdered Sugar (PS) • Salt (SA) • Baking Soda (BS) • Plaster of Paris (PP) • Corn Starch (CS)

28. Mystery Powders • During this unit we will not use the sense of taste. Unless you are working in a Test Kitchen taste is not safe in the laboratory. • Observation is the first thing we will use with our plain (single) powders. • We will continue to observe during each laboratory test. • A good researcher will take notes and pictures throughout the process.

29. Mystery Powder Tests • Dissolve Test • Fizz Test • Burn Test • Iodine Test

30. Dissolve Test Shake a small amount of powder in a test tube with water • A Positive test – the liquid will be clear • A Negative test – the liquid will be cloudy

31. Fizz Test Put one or two drops of vinegar on a small amount of powder • Very Positive – the power fizzes • Somewhat Positive – the powder fizzes a little • Negative – No reaction is visible

32. Burn Test (outside) • Place a small amount of power in an aluminum foil burn cup and hold over a flame • Positives#1: look for turning brown, turning black, smoking, smells, burning • Positives #2: no color change or smell but, POPs; no color change or smell but, clumps and slides • Negatives: no change in color, no smell

33. Iodine Test • Note – Iodine is poisonous if swallowed and will stain clothing and skin! Handle with care. • Test – place one drop of iodine on a small amount of powder. • Positive – powder will turn black or purple • Negative – power will turn yellowish brown (the color of iodine)

34. Deduction Time • Each powder has different characteristics. • Based on your observations and test results you will be able to match each single powder to the answers on your key. • The tricky part will come when you have two powders mixed together.

35. Double UnknownsEach double is made from two different singles • SU-F • SU-BS • SU-CS • SU-SA • SU-PS • SU-PP • F-BS • F-CS • F-SA • F-PS • F-PP • BS-CS • BS-SA • BS-PS • BS-PP • CS-SA • CS-PS • CS-PP • SA-PS • SA-PP • PS-PP • Do you see a PATTERN?