It increases
You freeze the substance! (You remove energy from the system.)
The energy required to melt one gram of a substance is known as the heat of fusion.
The measurement of how much heat energy is required for a substance to melt is called the heat of fusion. It is the amount of energy required to change a substance from a solid to a liquid at its melting point.
The energy required to melt a substance
Melting is a change of state of a substance caused by an increase in thermal energy, so heat is required to melt a substance.
It can melt into a liquid, it can be juiced,
Endothermic is when a substance gains energy to melt or evaporate, on the other hand exothermic means when a substance gives out energy to freeze or conense :))
When energy is provided to any substance and its bonds are loosened, it starts melting.
It can melt into a liquid, it can be juiced,
It can melt into a liquid, it can be juiced,
The enthalpy of fusion of a substance (H fusion) tells us how much energy is required to melt one gram of the substance. By dividing the energy input (1 kJ) by the enthalpy of fusion, you can calculate the mass of the substance that the energy will melt. It's a simple ratio: mass = energy input (kJ) / enthalpy of fusion (kJ/g).
This is a thermal decomposition reaction: new compounds are obtained by heating.