Physics
(i) Heat supplied to a solid change it into liquid. What is this change in phase called?
(ii) During the phase change does the average kinetic energy of the molecules of the substance increase?
(iii) What is the energy absorbed during the phase change called?
Calorimetry
ICSE 2018
6 Likes
Answer
(i) The change of phase from solid to liquid on heating is called melting.
(ii) No, the average kinetic energy of the molecules does not change during the change of phase.
(iii) The energy absorbed during the phase change is called latent heat.
Answered By
4 Likes
Related Questions
The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.
Given: Specific heat capacity of water = 4200 J kg-1 ⁰C-1 and Specific latent heat of ice = 336000 J kg-1
An electric iron is rated 220V, 2 kW.
(i) If the iron is used for 2h daily, find the cost of running it for one week if it costs ₹4.25 per kWh.
(ii) Why is the fuse absolutely necessary in a power circuit?
(i) Find the equivalent resistance between A and B.
(ii) State whether the resistivity of a wire changes with the change in the thickness of the wire.
(i) State two differences between "Heat Capacity" and "Specific Heat Capacity".
(ii) Give a mathematical relation between Heat Capacity and Specific Heat Capacity.