which statement best describes chemical properties of matter?\nchemical properties, such as density, must be…

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

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

Answer

Answer:

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

Brief Explanations:

Chemical properties involve chemical changes where a substance's identity alters and new substances are created. Combustibility is a chemical property. Density and boiling - point are physical properties. Reactivity is observed during chemical reactions, not just in a substance's natural state.