The question asks about the phenomenon accompanying the change of state from ice (solid) to water (liquid), which is known as melting.
State Change: Ice to Water
The transition from solid ice to liquid water is a phase change process called melting. This process occurs at a specific temperature, the melting point.
Energy and Temperature Dynamics
- Melting requires energy input in the form of heat. This heat energy is absorbed by the ice from its surroundings.
- During the phase change itself, the temperature remains constant at the melting point (0°C or 32°F). The absorbed heat energy, known as the latent heat of fusion, is used to break the bonds holding the water molecules in a fixed structure in the solid state.
- However, the question asks what the change is "accompanied by". Once all the ice has melted into water, any further absorption of heat will cause the temperature of the liquid water to rise above the melting point. Therefore, an increase in temperature is a subsequent or overall effect associated with the process when heat continues to be supplied.
Analysis of Options
- Decrease in temperature: Incorrect. Heat is absorbed, not released, during melting, and the temperature doesn't decrease.
- Increase in temperature: Correct. While melting occurs at a constant temperature, the process requires heat absorption. After melting is complete, this absorbed heat increases the water's temperature.
- Absorption of heat: This is the physical mechanism driving melting, but the 'increase in temperature' reflects the consequence of this absorption after the phase transition is complete.
- Release of heat: Incorrect. Heat is absorbed during melting; heat is released during freezing (the opposite process).
Based on the overall effect and the state after the phase transition, the change of state from ice to water is associated with an increase in temperature, driven by the absorption of heat.
Similar Questions
- Heat supplied to a system is measured in ______.
- _____ is a mode of heat transfer by actual motion of matter.
- _____ is the unit of thermal conductivity.
- A brick wall having a thickness of 24 cm has an inner surface temperature of \(25^{\circ}C\) and an outer surface temperature of \(5^{\circ}C\). The rate of heat loss through per square metre of the wall (thermal conductivity = \(0.15\ J/(s\cdot m \cdot K)\)) is:
- Conduction and convection modes of heat transfer CANNOT operate between bodies separated by _____.
Which of the following options is correct when two objects at the same temperature are kept in contact with each other?
Two containers, one painted black and the other painted white, have been kept in sunlight for one hour in the afternoon. Choose the correct observation.
A brass rod (thermal conductivity 109 J/s m K) has an area of cross section 0.04 m 2and length 20 cm. If the two end of the rod are maintained at a temperature difference of 200°C, the rate of heat flow through the rod is ________.
A copper spoon is dipped in hot water. What happens to its other end?
The heat developed in a 5 ohm resistor in 2 minutes when a 2A current passes through it is ________.
Important Questions from Heat transfer
If a liquid is heated in weightlessness the heat is transmitted through
An iron ball at 60°C is dropped in a mug containing water at 60°C. The heat will
The temperatures of two perfect black bodies A and B are 400 K and 200 K, respectively. If the surface area of A is twice that of B, the ratio of total power emitted by A to that by B is
The volume and temperature of a spherical cavity filled with black body radiation are V and 300 K, respectively. If it expands adiabatically to a volume 2V, its temperature will be closest to
A wooden spoon is dipped in a cup of ice-cream. Its other end
