Question

1. which statement about the energy of a phase change is true?

o melting is an endothermic change, because ice releases energy to its surroundings as it melts.
o melting is an exothermic change, because ice absorbs energy from its surroundings as it melts.
o melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.
o melting is an exothermic change, because ice releases energy to its surroundings as it melts.

Explanation:

Melting is a phase change where a solid (like ice) turns into a liquid. Endothermic processes absorb energy. When ice melts, it absorbs energy from its surroundings. Exothermic processes release energy. Since melting of ice involves absorption of energy (not release), it is an endothermic change.

Answer:

Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.