Is it easy or difficult to change the temperature of a substance that has a low specific heat capacity? Why?
827524
Easier compared to one with a higher heat capacity:\n\nH/(m*Cp) = (delta T), where m is the mass of the object, H is the heat that must be added (or removed) to raise (or lower) its temperature, delta T is its change in temperature, and Cp is its heat capacity. From the above formula, you can see that larger values of Cp result in small temp. changes, for the same heat amount.
686314
"Hot" is a very subjective word.  How "hot" is "hot"? 100 degrees C? 500 degrees C?\n\nWhen an object absorbs heat energy its temperature rises, there is no way around it.  But for a given quanity of heat energy (Q) absorbed, some materials will increase in temperature (delta T) more than others.\n\nThe term "Specific Heat" (c) releates the amount of energy needed to raise 1 gram of a substance 1 degree C.\n\nQ = m*c*(delta T)\nHeat enegry = mass of the object * the specific heat * change in temperature\n\nA higher specific heat means that the material will experience a relatively smaller change in temperature for a given amount of heat as compared to another material with a higher specific heat.\n\nUsually, metals tend to have somewhat low specific heats but there are some metals which are higher than others.\nFor instance,...\n-Iron has a specific heat of .444 J/g degree C\n-Copper has a specific heat of .385 J/g degree C\n-Lithium metal (not that this is a practical building material) has a specific heat of 3.582 J/g degree C\n-liquid water's c = 4.184 J/g degree C\n\nmore complete tables of specific heat can heasily be found on the internet.
931739
By lowering temperature.
142406
Mass is not affected by temperature, but volume can be slightly changed because if an object heats up, the particles begin to move faster and so it expands, or vice versa if the object gets cooler.
659896
Low specific heat is an advantage, and here's why.\n\nIn an ideal temperature measurement, the thermometer would not disturb the temperature of the object being measured.  A material with high specific heat would come into thermal equilibrium with the sample, but it would potentially absorb a significant amount of heat from the sample-- cooling it while the thermometer increased in temperature.  If you have a material with low specific heat, while it is equilibrating, it doesn't absorb much heat from the sample, so the temperature measured is closer to the real temperature of the sample.
155392
One method is using bimetallic strips of metals that can stand very high temperature. Bimetallic strips bend when the temperature changes.
314230
yes...if you change the temperature....the density of water for example changes with its temperature....
539041
Yes it is possible. BUT are you sure its a single crystal. Was the growth or cooling rate the same? Are there other impurities, compounds, molecules etc in the crystal to cause it to change its structure?
725257
Well that's a good one though, I suppose you can't do that. What you think is simple is too complicated. We have a lot of problems maintaining the  temperature as a constant. You simply cant stabilize it. It will keep oscillating. You can still do it, but they'll be expensive and hard. It all depends on the surrounding temperature, where you put it, what the jugs are made up of(material) and so on.  But, you can maintain the temperature within a certain range. Contact your thermodynamics teacher for assistance.
190244
Specific Heat Capacity\nThe specific heat capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This can be stated by the following equation: \n\nQ= mc(changes of T)\nwhere, \nQ= Heat supplied to substance, \nm= Mass of the substance, \nc= Specific heat capacity, \nT= Temperature rise.
341402
Specific heat does not apply to reactions, only actual chemicals.  You are probably thinking of the heat of reaction, or enthalpy.  The change in enthalpy of a reaction (written as delta H, delta as the Greek letter that looks like a little triangle) flips its sign when the reaction is run in the reverse direction.  So a positive delta H value becomes negative when the reaction is run in reverse direction, and a negative delta H value becomes positive.
1111193
In my years of teaching, it seems that everything in chemistry is related to stability.  The network solids are very stable structures and form strong bonds.  \n\nA melting point in chemical terms is when the physical property of heat is capable of changing the configuration of the bonds.  This configuration will be resistant to change if it is in a stable state, because the change to the liquid form is an increase in entropy (chaos).  Therefore a high temperature would be required to change the form.
666461
Of course taking the temperature of anything will alter the temperature that you're taking. The question is how much. For most cases, the change is negligible, so we can take the measurement as the temperature of the object (here the object can be water).\n\nThe reason that there is a change to the temperature is because when you add your measuring device (here it would be a thermometer) to the water, the thermometer will either absorb or release some amount of heat, depending on its relative temperature to the water. The laws of thermodynamics states that a system will always seek to reach a state of thermal equilibrium (meaning that hot things will release heat to cool off, and cold things will absorb heat to warm up).
379801
This website does all the work.  Just put in the values!  Good luck.  http://www.onlineconversion.com/temperature.htm
76877
You might be able to make a PM machine based on a vaporizing and recondensing fluid, which is what I'm guessing you're getting at. PM, that is, as long as the necessary temperature differences continue to exist. You would need to vaporize at a low point and condense at a high point, with wheel motion bringing the heavier containers of condensed fluid down to a warmer location for vaporization. It doesn't violate any thermodynamic laws since it takes heat input and exhausts cooler output, just like the water-bobbing woodpecker does. Do it!
143220
Yes, only if the volume difference is enough to compensate for the difference in temperature.\n\nOtherwise, no.  It is not logically or physically possible, given the same amount and the same environment.
338498
There are different types of glass, with different specific heat values.  Specific Heat is also called Heat Capacity.\n\nFlint Glass   0.503 Joules / gram Kelvin\nPyrex Glass   0.753 Joules / gram Kelvin