Evaporation is a cooling process because when liquid turns to gas, it needs more energy, and so it has to take that energy from its surroundings. The energy is in the form of heat, and when the heat energy leaves with the evaporating liquid, the surroundings get cooler as a result. This has to do with the properties of the different states of matter.Know More
Gas molecules move much more quickly than liquid molecules (and particular solid ones). Motion requires kinetic energy, and the faster a molecule moves, the more kinetic energy it needs.
For many people, it helps to think about how perspiration works. The body releases sweat through the pores, but the sweating does not complete the job of cooling. The sweat evaporates, taking heat from the body with it. Inside the molecules, both solids and liquids have forces at work that hold the molecule together and connect it to other molecules. For a solid to become a liquid, and then for a liquid to become a gas, those attractive forces have to break. The source of the energy necessary to break those forces is excess heat in the system. So while evaporation does lead to cooling, it does not lead to a loss of energy. Instead, the energy simply converts from heat energy to kinetic energy for the gas molecules.Learn more about Atoms & Molecules
Lattice energy trend is a trend that is seen in the periodic table as readers move down the group. Lattice energy is known as the energy that's released when oppositely charged ions in the gaseous state form a solid. The energy between ions can be calculated with the help of Coulomb’s Law.Full Answer >
Salt is harvested from seawater through evaporation. The evaporation method depends on the geographical area and whether the saltwater is processed in large or small batches.Full Answer >
The explosion created when soda and Mentos are combined occurs because of nucleation, a process in which the carbon dioxide in the soda attempts to latch onto the outside of the Mentos, creating a huge amount of pressure. This pressure forces the soda to explode out the top of the bottle.Full Answer >
Electrons sometimes absorb energy and shift to an excited state for short periods of time. When they lose the excess energy, the energy is released as a photon. The photon can sometimes be seen as visible light in an emission spectrum.Full Answer >