A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one of her materials?

A chemical property describes how a substance can change through a chemical reaction. The copper strip’s reactivity tells how it may react with other substances, so “reactivity of the copper strip” is the chemical property. Density, odor, and color can be observed without changing a substance chemically, so they are physical properties.

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