PLEASE HELP What type of change is melting ice?

A. physical
B. chemical

A. physical

Explanation: When you melt an ice cube (H2O), you have a physical change because you add energy. You added enough energy to create a phase change from solid to liquid. Physical actions, such as changing temperature or pressure, can cause physical changes. No chemical changes took place when you melted the ice.

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A- physical change

Explanation:

Because you can melt and freeze again but you cannot return it to its original form with a chemical change

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

its c i just checked it