Hi
I cant find a good short answer - during phase change in water
how would you describe change in a arrangement of particles as heat energy and temperature increases.
There is no short answer to the way you have phrases the question but I can give you a long answer to the question and you can then shorten it. Actually, you have asked two questions rolled into one.
Let's take water as an example. As heat is added to water at say 90 degrees C, the molecules of water become more vigorous (they are rather vigorous at 90, of course) and their kinetic energy increases. That continues until the temperature of the water reaches 100. At that point, we have only liquid water plus the vapor associated with water at that temperature. If we add more heat energy, the termperature of the water will not change; i.e., it will stay at 100, BUT for every 540 calories of added heat we can convert 1 gram of water from liquid to steam. That will continue, at 100 degrees C, until all of the water has been vaporized to steam. At that point, adding more heat will raise the temperature of the steam to something over 100. I hope this covers your question. After you understand the entire process, I'm sure you can find a simple short answer.
Hello! During a phase change in water, such as the transition from a solid (ice) to a liquid (water) or from a liquid to a gas (water vapor), the arrangement of particles undergoes specific changes as heat energy and temperature increase.
To understand this, let's take the example of ice melting into water. As heat energy is added to the ice, the temperature of the ice rises. However, once the ice reaches its melting point (0 degrees Celsius or 32 degrees Fahrenheit), the temperature remains constant. This is because the heat energy being added is now being used to break the intermolecular forces holding the particles of the ice together, rather than increasing the temperature.
During the phase change from solid to liquid, the particles in the ice start to move more freely, as the intermolecular forces weaken and break. The organized lattice structure of the ice begins to break down, and the particles become more disordered. This results in the solid ice transforming into a liquid state, where the particles can flow and move around more easily.
As the heat energy continues to be added, the temperature of the water rises once again. The particles in the liquid water gain more energy, and their movement becomes even more random and faster. Finally, if enough heat energy is added, the water can undergo another phase change and turn into water vapor, transitioning from a liquid to a gas.
In summary, during a phase change in water, an increase in heat energy and temperature leads to the breaking of the intermolecular forces, resulting in a change in the arrangement and movement of the particles.