INTRODUCTION
SCIENTIFIC INQUIRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The amount of water
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The melt time
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The size of the ice cube
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The amount of salt
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Detailed explanation-1: -The independent variable is the size of the pieces of ice, it changed between the two tests. One of the constant variables would be the temperature in the room, it stays the same for both tests. The control would be the whole ice cube that is melting.
Detailed explanation-2: -The time was the dependent variable because it was affected by the independent variable (salt). The average time for each type of basic salt was recorded. Kosher salt was the most efficient when melting the ice.
Detailed explanation-3: -Salt water freezes at a lower temperature than the 32 degrees F at which freshwater freezes. The difference between the air temperature and the freezing point of salt water is bigger than the difference between the air temperature and the freezing point of freshwater. This makes the ice with salt on it melt faster.
Detailed explanation-4: -Hypothesis: The water cube will melt first as it is the least dense of the three solids giving less products with in the cube to melt.