INTRODUCTION
SCIENTIFIC INQUIRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hypothesis
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Question
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Analysis
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Conclusion
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Detailed explanation-1: -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.
Detailed explanation-2: -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-3: -Cold water sinks so the warm water is always touching the ice cube. This makes it melt faster. colder than the saltwater, it cannot sink because the water beneath it is denser.
Detailed explanation-4: -Endothermic reactions are the opposite of exothermic reactions. They absorb heat energy from their surroundings. This means that the surroundings of endothermic reactions are colder as a result of the reaction. Melting ice is an example of this type of reaction.