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