08/24/15 - 3/4 C 1H - LAB: P & C Changes Part 2


Today's Agenda

Our Focus Question:  What practices are followed to ensure safety in the laboratory?

Goals
  1. Identify and describe appropriate dress for laboratory investigations. 
  2. Identify safe and unsafe laboratory conditions and behaviors. 
  3. Follow best practices in the handling of chemicals and equipment in order to minimize exposure to chemicals. 

Activities
  1. Bell Ringer
    1. Turn in your safety questions.
    2. Pick up your goggles, and report to lab.
    3. Gather your samples today as you did Friday.  
    4. Listen for instructions at the bell.
    5. Also you will need to pick up a copy of  "I Can" for Fundamentals of Experimental Design" for classifying matter.
  2. Housekeeping
    1. Syllabus/Safety agreement
    2. Hair ties
    3. Lab shoes
    4. Google Classroom
    5. Honors Forum - Meet the Honors Teachers - TONIGHT 6 -7pm
  3. Fundamentals of Experimental Design, Lesson 1
  4. LAB: Physical and Chemical Changes, Part 1
    1. "Highlights" from Pre-lab Scoring
    2. Safety
      1. Materials bench and fume hoods
      2. Starting and stopping for how to demos
    3. Processing (Here is digital copy of the lab)
    4. Lab - Part B
      1. Safety and Demos (during lab)
        1. How to light a burner
        2. How to filter a mixture
        3. How to safely observe the burning of Mg
        4. How to clean up an acid spill
      2. Clean-up
        1. Solids in the trash
        2. If your test tube has a solid in it that DID NOT dissolve...
        3. Wash equipment and put away
        4. Wash hands
      3. Post-lab questions and scoring (20 points)
        1. Indicate whether each of the following changes was physical or chemical.  Tell WHY based on your observations.
          1. Mixing Fe and S (Teacher demo)
          2. Mixing sand, NaCl, and water.
          3. Burning Mg
          4. Adding HCl acid to 
            1. the product of burning Mg
            2. Mg
          5. Heating sucrose
          6. Mixing sodium hydrogen carbonate and HCl
          7. Describe how you were able to decide whether an observed property was physical or chemical.
          8. Explain what criteria will you use to distinguish between a chemical change and a physical change.
    1. Closure
      1. Reminders
      2. Class picture!
      3. How to read the "I Can" document.  Go to Classroom!  Sorry, wrong QR Code on the handout today.
    Prepare for the Next Class
    Check Google Classroom.
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