How do changes in state (e.g., boiling, freezing) illustrate the concept of physical changes? What is happening at the molecular level during these changes?
Answer (2)
Changes in state like boiling and freezing exemplify physical changes as they involve energy transfer and molecular rearrangements without altering the substance's chemical identity. During boiling, molecules gain energy and transition to gas, while in freezing, they lose energy and form a solid. These processes highlight how physical changes occur at the molecular level. ;
Changes in state like boiling and freezing demonstrate physical changes as they involve energy transfer and molecular arrangement without altering the substance's chemical identity. During boiling, molecules gain energy to become gas, while in freezing, they lose energy to form solids. This illustrates how physical changes occur at the molecular level while retaining the original substance's properties.
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