6. During a phase change (e. g., the transition from solid to liquid), significant energy is absorbed by the system. Yet, the temperature remains constant. Where does the energy go

Explanation:

The energy absorbed by the system during phase change is referred to as latent heat.

Latent heat is the energy absorbed or released by a body during a phase change without change in its temperature.

The energy is what is being used for the phase change and cannot be measured by the thermometer.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.