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Which change happens when a substance boils? (1 point)

O The molecular bonds of the substance weaken. The molecules move apart, but the molecules do not change.
O The forces between atoms in the molecules strengthen, and the atoms move closer together.
O The molecular bonds of the substance strengthen. The molecules move closer together, but the molecules do not change.
O The forces between atoms in the molecules weaken, and the atoms move apart.

1 Answer

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The correct option is:

The forces between atoms in the molecules weaken, and the atoms move apart.

When a substance boils, it undergoes a phase transition from a liquid to a gas. During this process, the intermolecular forces holding the molecules together weaken, allowing the molecules to move apart and transition into the gaseous state.

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