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Physical properties can be observed or measured without changing a substance's identity. Hardness and flammability are examples of distinct properties.
Physical property of a substance refers to characteristics that can be observed or measured without changing the substance's identity. Hardness is an example of a physical property as it describes how easily a substance can be scratched or dented. In contrast, flammability is a chemical property as it involves the substance's ability to react and burn.
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