Which statement best describes chemical properties of matter? Chemical properties, such as density, must be observed when a substance is in its natural state at room temperature and normal atmospheric pressure. Chemical properties, such as reactivity, must be observed when a substance is in its natural state at room temperature and normal atmospheric pressure. Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form. Chemical properties, such as boiling point, are generally observed as the identity of a substance changes and one or more new substances form.

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Answer:

Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.

Explanation:

Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form. Hence, option C is correct.

What are the chemical properties of matter?

Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter.

Substances made of wood, such as paper and cardboard, are also flammable.

Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter.

They include reactivity, flammability, and the ability to rust.

Hence, option C is correct.

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