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it is dry ice it can not turn in liquid only solid and gas of how cold it is.

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Evaporation is when the water is going into the sky to make a cloud

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its when the water is turning into gas and at its boiling point.

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is when water turns into a gas when you put heat into liquid

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While listening to two of my roommates bicker over whether or not the myth of adding salt to water makes it boil faster I began to also wonder whether or not it was true. My one roommate, Athyna, supported the null hypothesis of that adding salt to a pot of water actually did nothing while my other roommate, Emilie, supported the alternative hypothesis saying that adding salt to a pot of water does cause it to boil faster. I on the other hand also threw out the idea that there may be confounding variables that allow you to believe that the water is boiling faster. I said that the unaccounted factor might be your mind. This placebo affect changes Emilie's perception of the boiling water because it causes her to think that there is less time going by as she boils water. By adding the salt to the pot of water Emilie may believe that the water is boiling faster in order to reduce dissonance from her original belief when in fact the boiling water could just occur by chance. Maybe she uses less water than Athyna; she could also be more distracted while cooking than Athyna and her completing other tasks may cause her to think that the water boiled relatively fast.

Please note that this will not hold true if you take two identical pots containing one gallon of water each and A scientific study that was performed was helpful because it provided a chemical explanation for the failure to reject the null hypothesis. The study showed that if you took two identical amounts of water and added salt to one then the pot with salt will not boil any faster than the pot without salt. The chemical explanation dealt with water's heat capacity. Although with 100 grams of water 80 grams contains pure water and 20 grams contains pure salt; the mixture would have a lower boiling point than pure water. " add the salt to one pot because then the volume of liquid in the salted pot will be greater than the one gallon starting point." The study was helpful because if you truly wanted to have a pot of water boil faster then you could do so by adjusting the proportions of salt and water in the pot.

Another study explains the hypothesis of whether or not salt helps water boil faster in terms of the vapor pressure in the presence of a solute. The addition of the salt content to the water "lower's the vapor pressure which means that a higher temperature is necessary to boil the water in the solution, hence boiling-point elevation." On a positive note the study provided a possible confounding factor of a higher temperature that may have caused Emilie to believe her pot of water with salt in it boils at a faster rate than a pot without salt. The study was not helpful though in terms of providing truth to reject or fail to reject the null hypothesis in terms of boiling speed.

A third study provided truth in rejecting the null hypothesis concluding that there is a significance with the addition of salt added to a potential pot of boiling water. The experimenter provided evidence from an experimental study conducted and explained " when salt is added to the mix, the molecules start to move around rapidly and randomly making the water temperature rise and the water to boil faster." The study was unhelpful in terms of the consistency of each pot used. I was unable to tell if they had less water and a specific portion of salt in a pot as the first study had shown, or if both of the pots contained the same amount of water and the other just added salt.

With the chemical reasoning from each study I myself concluded to neither fail to reject or reject the null hypothesis. I believe that the speed of the water boiling with the addition of salt has to do with heat capacity. All three studies seem to agree on the fact that when salt is added to water its heat capacity rises allowing it to boil at a greater temperature. So therefore I am now faced with the task of informing my roommates that they were both wrong because salt only affects the temperature at which water boils not the speed. But what do you think? Is it the salt that helps the water boil faster because of the molecules bouncing around? Do you believe that the same results would hold true if a different compound was used in the place of salt?

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While listening to two of my roommates bicker over whether or not the myth of adding salt to water makes it boil faster I began to also wonder whether or not it was true.

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is when the ice is melting into a liquid. into the melting point

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is when the ice is turning into a water again.

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accompanied by or requiring the absorption of heat.

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Definition of an endothermic reaction, the role of energy and examples of endothermic reactions.

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it Gas,liquid, and solid