loses
When ice melts it gains heat. The environment, however, loses heat. So what does heat have to do with temperature? Often they vary in the same direction; temperature has been likened to the average kinetic energy of the substance.
Melting typically ( e,g,, for ice-water) clamps the temperature at a constant value, but heat flows into the substance that melts.
When matter melts (changes from a solid to a liquid state), its molecules move faster, meaning they are gaining energy.
Atoms typically do not lose protons because that would change the identity of the element. Instead, atoms can lose or gain electrons to form ions with a different charge. Protons are not generally lost by atoms in chemical reactions.
During a change of state, such as melting or boiling, the particles in a substance rearrange their positions and gain or lose energy to move from one state to another. For example, in melting, solid particles gain enough energy to break their fixed positions and move more freely, turning into a liquid. Conversely, in boiling, liquid particles gain enough energy to break free from each other and turn into a gas.
Melting gains energy because it requires heat energy to break the intermolecular forces holding together the solid molecules. This energy is needed to overcome the attraction between the molecules and allow them to move more freely as a liquid.
The changes of state characterized by having atoms that gain energy are melting and vaporization. In melting, solid atoms gain enough energy to break the bonds holding them in a fixed position, transitioning to a liquid state. In vaporization, liquid atoms gain sufficient energy to overcome intermolecular forces, transitioning to a gaseous state.
A material must gain energy both before and during melting.
When matter melts (changes from a solid to a liquid state), its molecules move faster, meaning they are gaining energy.
Lose
Oceans can both gain and lose water. They gain water from sources like rainfall, rivers, and melting ice caps. They lose water through processes like evaporation and when water is locked into glacial ice. Overall, the balance between these inputs and outputs determines whether the oceans are gaining or losing water.
Neither lose nor gain.
gain
Atoms typically do not lose protons because that would change the identity of the element. Instead, atoms can lose or gain electrons to form ions with a different charge. Protons are not generally lost by atoms in chemical reactions.
If you gain internal validity do you lose external validity
When atoms lose or gain electrons, they form ions. These are charged particles.
Most substances lose or gain energy when their temperature changes.
Wisdom.
if anything it would be reasonable to expect it to lose mass.