Chemistry, 19.12.2019 22:31 msitez5993

Cindy predicts that plastic foam insulates cold drinks better than metal or ceramic materials do. to test the hypothesis, she fills cups made from these materials with equal amounts of cold water. she records the temperature of the water in each cup, using scientific thermometers, every 10 minutes until the water reaches room temperature. which of these conditions must be the same for this experiment to be valid?
a. the thermometer that is in each cup
b. the starting temperature of the water in each cup
c. the ending temperature of the water in each cup
d. the material that makes up each cup

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Cindy predicts that plastic foam insulates cold drinks better than metal or ceramic materials do. to...