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Why is melting ice considered an endothermic reaction?

a The ice releases energy into the air to weaken the intermolecular forces
b The ice absorbs energy from inside itself to weaken the intermolecular forces
c This is not an endothermic reaction
d The ice absorbs the energy from the air that then loosens the intermolecular forces to melt the ice cube

User Shuvro
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Final answer:

Melting ice is an endothermic reaction because it absorbs energy from the surroundings to weaken the molecular bonds and transform ice into water.

Step-by-step explanation:

Melting ice is considered an endothermic reaction because it requires the absorption of energy to weaken and break the intermolecular forces that hold the water molecules in a solid structure. When heat is transferred to the ice from its surroundings, the ice absorbs this energy, which allows the molecules to move apart and assume a liquid state, melting the ice. This process involves an increase in enthalpy (heat absorbed from the surroundings is positive, conventionally written as q > 0), and therefore, the correct answer to the question is 'd The ice absorbs the energy from the air that then loosens the intermolecular forces to melt the ice cube.'

User Slothstronaut
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