i ice cream: physical.
YOU NEED: INGREDIENTS: 1 cup of whole milk * 2 tablespoons of sugar * 1 tea spoon of vanilla extract TOOLS: 1 large mixing bowl * 1 large mixing spoon * 2 small heavy-duty Ziploc bags * 1 large heavy-duty Ziploc bag * measuring spoons * measuring cups * crushed ice * 6 tablespoons coarse salt TO DO: 1. Place the ingredients in the mixing bowl and stir gently. 2. Carefully pour half the mixture into a small Ziploc bag, and the remaining half into the other small bag. 3. Seal the bags tightly. Make sure there are no leaks. 4. Place one small bag into the freezer. Then place the other bag inside the large Ziploc bag. Pack ice into the large bag until it's half full. 5. Pour the salt onto the ice in the bag. Then close and seal the bag. Make sure there are no leaks. 6. Shake the bag for 5 to 10 minutes, or until the ingredients in the small bag freeze softly. 7. Remove the small bag and sample your ice cream. 8. After 3 hours, remove the bag you placed in the freezer. Sample that creation.
How do the two versions of ice cream differ? Why? (Hint: Ice crystal growth.)
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|Date:||Feb 2, 2004|
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