Advertisements
Advertisements
Question
(i) Define Calorimetry.
(ii) Name the material used for making a Calorimeter.
(iii) Why is a Calorimeter made up of thin sheets of the above material answered in (ii).
Solution
(i) Calorimetry is the sceince associated with determining the changes in energy of a system by measuring the heat exchanged with the surroundings.
(ii) Copper, wood
(iii) To aoid any heat utilise in making the temperature of sheet going up.
APPEARS IN
RELATED QUESTIONS
How can a temperature in degree Celsius be converted into S.I. unit of temperature?
Describe an experiment to show that there is absorption of heat energy when the ice melts.
The specific heat capacity of a substance A is 3,800 Jkg `"^(–1)K^(–1)` and that of a substance B is 400 `"^(–1)K^(–1)`. Which of the two substances is a good conductor of heat ? Give a reason for your answer.
Ice cream appears colder to the mouth than water at 0°C. Give a reason.
Fill in the following blank using suitable word:
Evaporation causes ..........
How is the loss of heat due to radiation minimised in a calorimeter?
1 kg of ice at 0o is heated at constant rate and its temperature is recorded after every 30 s till steam is formed at 100o C. Draw a temperature time graph to represent the change of phase.
Why do doctors advise to put a strip of wet cloth on the forehead of a person having high fever (temperature)?
Calculate the heat energy that will be released when 5.0 kg of steam at 100°C condenses to form water at 100°C. Express your answer in S.I. unit. (Specific latent heat of vaporization of steam is 2268 kj/kg.)
