8.Water has many properties that make it crucial to life as we know it. Some of

Question

8.Water has many properties that make it crucial to life as we know it. Some of temperature of water rises and falls slowly. rface tension, and neutral pH. Another property is High Heat Capacity. That means that the them are solubillity, adhesion, Use the graph below to answer the following a. What variable is plotted on the x axis? b. What variable is plotted on the y axis? c.How does the temperature change in the control compared with the temperature change in the experimental? d.Suggest why the temperature of the water did not rise as high as the oil in the same amount of time. e.Give an example of where you have experienced the high heat capacity of water. Temperature vs. Time oil temperature /*C 60 + 50 45 40 35 30 25 20 60 90 120 150 180 0 30 time /s http://fyzakalnipokusy.cz

Explanation / Answer

a) On X-axis Time variable is plotted in Seconds.

b) On Y-axis Temperature variable is plotted in oC.

c) In control, the temperature is changed linearly with time. But experimentally it does not follow a linear relationship with time.

d) As in the question, the heat capacity of water is high compared to oil. It means the heat required to raise the one degree centigrade temperature of the water is more compared oil. That means water has strong ability to absorb more heat compared to oil. Because of this reason in the same temperature interval, water temperature raises slowly compared to oil.

e) Because of its high heat capacity value, water absorbs more amount of heat (high heat index). That means it absorbs a lot of heat to get hot. Because of this water is used as a coolant in most of the industries and car radiators.

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