Final answer:
Boiling point is a physical property, while flammability, toxicity, and rusting are chemical properties.
Explanation:
Boiling point is a physical property because it describes a characteristic of a substance without changing its chemical composition.
On the other hand, flammability, toxicity, and rusting are chemical properties as they involve changes in the composition of matter or its reactivity.
Understanding the difference between physical and chemical properties is crucial in chemistry to categorize and describe various substances accurately.
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