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20 August, 02:18

Which of the following is a physical property of a substance? A. Hardness B. Flammability C. Reactivity D. Toxicity

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Answers (2)
  1. 20 August, 02:20
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    A. Hardness is a physical property of a substance
  2. 20 August, 02:34
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    A. Hardness

    Explanation:

    Physical property is those that can be observed without changing the substance directly. This includes hardness, color, volume, etc.

    Chemical property is observed by changing the chemical identity of the substance, for example, corrosion, oxidation, etc. Flammability, Reactivity, and Toxicity all fall under this category.
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