Question

What change takes over a long period of time? Physical change or Chemical change?

Answer 1

Answer:

Is a change in phase a physical or chemical change?

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. The water molecules are still water molecules.

Explanation:

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Answer 2

Answer:

physical change takes the longest period of time to develop