1. September 5, 2018
Warm Up: Take out data collection sheet from Friday’s Lighthouse Diamond Lab
Use information sheet to complete data table
Review your “Hot Suspects” list
Homework: USA Test Prep & online textbook work due Friday.

2. Physical vs Chemical Properties
Physical properties can be observed without changing the identity of the substance
They include size, color, texture, solubility, malleability, ductility, conductivity, and magnetism
Chemical properties are observed by how a substance reacts with another substance
This changes the substance chemically
They include reactivity, combustibility and flammability

3. Sugar Small crystals Melts over heat (turns brown, then black)
Dissolves in water
Does not react to vinegar or iodine

4. Salt Small crystals Does not melt over low heat Dissolves in water
Does not react with vinegar or iodine

5. Flour
Fine powder
Will brown and then burn over low heat (may smell like burnt toast)
Will not dissolve in water
Reacts to iodine by turning purple or black
Does not react to vinegar

6. Cornstarch Fine powder
Will brown and then burn over low heat (may smell like burnt popcorn)
Does not dissolve in water
Reacts to iodine by turning purple or black
Does not react to vinegar

7. Plaster of Paris Fine powder
Little reaction to low heat (may turn gray)
Does not dissolve in water
Does not react to vinegar or iodine

8. Baking soda Fine crystals/powder Does not react to low heat
Dissolves in water
Does not react to iodine
Reacts to vinegar with bubbling and fizzing

9. Next Steps Identify your six mystery powders, A – F
Identify the thief's mystery powder
Using the clues from the “Hot Suspects” list and the evidence from your data table, determine who stole the Lighthouse Diamond
Complete your affidavit with a claim of who is guilty, evidence that supports this claim, and reason that your group believes this person is guilty
Make sure you mention physical & chemical properties to test the thief's powder!
Turn in the completed data table and the affidavit when complete

10. September 5, 2018
Warm-Up: Use the first 15 minutes of class to finish your insulating box
Be sure to clean-up after yourself!
Mystery items will be placed in boxes in 15 minutes
Work will be returned while you are working – keep it out for review
Homework: Study for test. Chapters 5 & 14 in the online textbook. Complete online assignments (textbook & USA Test Prep) by Friday (may need to upload when through).

11. Test Standards:
SPS5. Obtain, evaluate, and communicate information to compare and contrast the phases of matter as they relate to atomic and molecular motion.
a. Ask questions to compare and contrast models depicting the particle arrangement and motion in solids, liquids, gases, and plasmas.
b. Plan and carry out investigations to identify the relationships among temperature, pressure, volume, and density of gases in closed systems.
SPS7. Obtain, evaluate, and communicate information to explain transformations and flow of energy within a system.
b. Plan and carry out investigations to describe how molecular motion relates to thermal energy changes in terms of conduction, convection, and radiation.
c. Analyze and interpret specific heat data to justify the selection of a material for a practical application (e.g., insulators and cooking vessels).
d. Analyze and interpret data to explain the flow of energy during phase changes using heating/cooling curves

12. Returned work Phase Change GIZMO – previously reviewed
Gas Law GIZMO – previously reviewed
Radiation Lab
Specific Heat Lab – previously reviewed
Gas Law quiz
Specific Heat quiz

13. Radiation Lab The black can should’ve heated up AND cooled off more
The primary type of heat transfer we observed was RADIATION (there was no contact between the lamp & the cans
The black can absorbed more heat and the silver can reflected more
This was NOT about conductors and insulators
Best reasons connected the claim and evidence with the science idea that black absorbs more heat than silver.

14. Specific Heat Quiz
Some partial credit was given

15. 3-2-1 Reflection – complete sentences
Tell me THREE items you chose for your box and why.
Tell me TWO changes you would make if you did this again
Tell me ONE thing you learned about heat transfer in doing this activity
Draw a diagram illustrating heat transfer between your ice cream sandwich and the air in the room