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What else can I help you with?
What happen to the temperature when ice is heated?
During a phase change (from solid to liquid, as in melting and also from liquid to gas as in boiling) the temperature remains constant, as all of the energy is going to affecting the change, rather than raising the temperature. Once it has changed from solid to liquid, the liquid can then raise in temperature.
Is liquid to solid exothermic?
No. Going from solid to liquid at constant temperature is an endothermic process. The required amount of energy is called "heat of fusion" of the material that changes state.
What happens to the kinetic energy of a substance while undergoing a phase change?
It depends on what phase change they are undergoing. If it were going from a solid to a liquid, then the kinetic energy would be greater. Same as if it were going from a liquid to a gas. However, if it were going from a liquid to a solid (or a gas to a liquid), then the kinetic energy would decrease.
What will happen if you pass dc current through a single coil?
If dc current is passed through a single coil, it is going to remain constant.
Who is going to be on figure it out?
The stars will constantly change for the Figure It Out Panel. However, the new host for the 2012 season will remain constant. It is Jeff Sutphen.
How can the temp of a substance remain the same if it is absorbing energy?
The temperature of a substance can remain the same while absorbing energy if it is undergoing a phase change, such as melting or boiling. During a phase change, the absorbed energy is used to break intermolecular bonds rather than increase the kinetic energy of the particles, which keeps the temperature constant.
Is the law of refraction the same for light rays going in either direction between the two media?
Yes. The laws of refraction are laws of physics and as such remain constant, as long as the space between the media is constant.
If you wanted to predict how temperature will effect the volume of a gas what factors must be held constant?
If temperature increases, then pressure increases. Temperature measures the average speed of particles, so if the temperature is high, then the particles are moving quickly and are colliding with other particles more forcefully. Pressure is defined as the force and number of collisions the particles have with the wall of its container. So if the high temperature causes the particles to move quickly, they are going to collide more often with the container, increasing the pressure. This remains true as long as the number of moles (n) remains constant.
Does temperature increase or decrease when going from liquid to gas?
The temperature decreases as the gas (vapour) turns back into a liquid. For instance, the hot water vapour from a kettle can be cooled so as to condense back into water.
Will the temperature of water increase after the boiling point if you continuously boil the water and why?
No. This is because the energy being transferred is no longer being used to heat the water. Instead, it is being used to engage in the next phase change, going from a liquid to a gas, or water to steam. At this point, the steam's temperature also remains constant. It isn't until the last drop of water is gone, that the steam will begin to heat up. Hope this helps! If not try http://www.pafko.com/history/h_distill.html
How is the melting point of a substance defined?
= temperature at which (all of) a (pure) substance is melting: going from solid into liquid phase.
How is the melting point of substance defined?
= temperature at which (all of) a (pure) substance is melting: going from solid into liquid phase.
