"It's a way to go from solid to liquid and liquid to solid without temperature change."
"It means it stays a liquid until you hit it suddenly like with your hands or, in this case, our feet, and then it turns to a solid."
"Sublimation is the phase change that occurs when a solid changes directly to a gas without first becoming a liquid."
"That's the latent heat of vaporization but if I'm cooling down and changing them back into a liquid, that's the latent heat of condensation."
"When a drop of water freezes, it spreads out to form an ice crystal."
"Gas returning into liquid, liquids turning into solids, solids turning into gas."
"The ability to store energy in this phase change media is best illustrated by its tiny size."
"Steam will condense into liquid water if you're below 100 degrees Celsius."
"At any phase change, delta G equals zero and we can derive expressions like so."
"Molecules will condense at their boiling points."
"What is the name of the process during which a liquid is cooled and turns into a solid? The answer is freezing."
"When you heat ice into steam, the temperature will not go up directly with heat added."
"Evaporation is the process by which a liquid changes into a gas."
"Phase transition means a sudden change in the properties of the system as you vary, for example, the temperature."
"Against all the laws of science, it can turn from solid to liquid."
"High latent heat of vaporization means it takes a lot of energy to evaporate water and turn it into a gas."
"Melting always requires heat because you need to add heat to disrupt those very organized bonds."
"If we want to melt this ice, we're going to have to apply heat to disrupt these attractive Coulombic interactions."
"The entropy principle helps us to understand not only the efficiency of steam engines but why liquids freeze at a certain temperature and solids melt at a certain temperature."
"Evaporating, changing state from liquid to vapor, is what causes this system to work."
"Solid carbon dioxide changes state directly from solid to gas, this process is called sublimation."
"If you keep pumping energy into that water, what does the water finally do? It boils."
"Boiling takes place throughout the liquid, however, evaporation only takes place at the surface."
"Boiling happens throughout the liquid, and evaporation only at the surface."
"Boiling occurs at a fixed temperature, unlike evaporation which can happen at any temperature."
"It is the energy required or energy transferred when one kilogram of a solid substance melts to form a liquid."
"Evaporation is literally just the process of evaporating a water molecule."
"The phase change temperature and phase change pressure are dependent on each other."
"In latent heat storage systems, the process of storing and retrieving thermal energy is based on the latent heat of fusion."
"A constant pressure phase change of a pure substance from a liquid to a gas."
"Latent heat is the amount of energy during a phase change."
"The latent heat is really the energy that's required to basically change the state of the substance from one phase to another."
"The latent heat of fusion is the energy required to go from a solid to a liquid."
"The latent heat of vaporization is the energy input to turn a liquid into a gas."
"PCMs operate using a phase change, in most cases, solid to liquid phase change."
"The reason why PCMs are so effective is that during phase transition there is a dramatic increase in specific heat."
"Could you use this to stabilize phases that are normally unstable?"
"Boiling is when the vapor pressure equals the atmospheric pressure."
"Substances can change state between solids, liquids, and gases depending on whether energy is gained or lost by the particles."
"Boiling point, melting point, vaporization, fusion, and sublimation are all functions of intermolecular forces."
"A gas can turn into a liquid, and a liquid can become a solid, and that depends entirely on the kind of substance, the temperature, and the pressure that we have."