SCIENCE
PHYSICAL SCIENCES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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temperature of water
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salt content of water
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amount of water
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freezing point of water
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Detailed explanation-1: -Hypothesis: The more salt added into the water, the density of the water will be increased because salt weighs more than water. Therefore, the water will have a lower freezing point. Independent: the difference in each cup is the amount of salt added to the water.
Detailed explanation-2: -VARIABLES: The independent variable is the different amounts salt that will be added to the water (what is done by the scientist). The dependent variable is the boiling temperature of the water (what is being measured). III: HYPOTHESIS: If salt is added to water then, the boiling temperature is lowered.
Detailed explanation-3: -The hypothesis of this experiment was that the water mixed with water would freeze at lower temperatures than that of the water mixed with sugar. The results showed that both saltwater mixtures and sugar-water mixtures have a lower freezing point than pure water.
Detailed explanation-4: -FREEZING POINT OF WATER If there is salt in the water, the freezing point is lower. The more salt there is in the water, the lower the freezing point will be and the longer the water will take to freeze.
Detailed explanation-5: -It was found that adding salt to water increases the boiling time of water. The more salt you add, the higher the boiling temperature becomes therefore the solution takes a longer period of time to boil.