Chemical and Physical Changes Take notes on the following video
http://www.youtube.com/watch?v=X328AWaJXvI Complete the following
lab. Slide 2 Observations: Quantitative, Qualitative, Physical
Change, and Chemical Change Slide 3 Slide 4 Part 1 Add 100 mL of
water to a 250-mL beaker. Add three drops of food coloring to the
beaker of water. Record observations. Slide 5 Part 2 Using a spot
plate, fill of a well with ammonia. Add 1 drop of phenolphthalein.
Make observations. Add vinegar to the top of the well. Record
observations. Slide 6 Part 3 1. Using a lab scoop, place one scoop
of Copper II Sulfate also named Cupric Sulfate in a mortar. 2. Use
a pestle to grind the Copper II Sulfate into a uniform powder. 3.
Place the powder in a crucible. 4. Set up a ring stand with Bunsen
burner as shown. 5. Heat gently with the Bunsen burner for four
minutes or until the Copper II Sulfate turns white. 6. Pick up
crucible with tongs and place on a square tile to cool for five
minutes. (You can work on a different part of this lab while it
cools. 7. Use a wash bottle, to add some water to the crucible. Lab
Scoop Slide 7 Part 4 DO THIS EXPERIMENT IN THE FUME HOOD. 1. Note
the appearance of magnesium ribbon. 2. Place a watch glass in the
fume hood. 3. Light the Bunsen burner in the fume hood. Using
tongs, hold the magnesium ribbon in the hottest part of the flame.
DO NOT LOOK DIRECTLY AT THE BURNING MAGNESIUM. 4. Let the burnt
magnesium ribbon fall onto a watch glass. 5. Record observations.
Slide 8 Part 5 Fill a 250 mL beaker with water. Place a table of
Alka-Seltzer in the water. Make and record observations Slide 9
Part 6 Add one level teaspoon of corn starch in a 250 mL beaker.
Add 2 mL of water and stir. Keep stirring. Pour the solution into
your hand. Record observations. Slide 10 Part 7 Burn paper. Record
observations. Slide 11 Part 8 Light a candle. Observe it for 3
minutes. Record observations. Slide 12 Part 9 Obtain a small piece
of steel wool. Light the Bunsen burner. Using tongs, place the
steel wool in the hottest part of the flame. Record observations.
Video Slide 13 Part 10 Heating wax Slide 14 Part 11 Burn nylon
Video
