i ice cream: physical.

Love ice cream? You're not alone. The average American eats about 15 pounds per year, according to the U.S. Department of Agriculture. But don't you hate it when you have a late-night craving and that lonely pint buried deep in your freezer tastes more like a chunk of ice than smooth cream? Yuck! Do this experiment to find out why some ice creams are smoother than others.

 
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 …