I need the answer asap
Define the following.
reactivity
A) Reactivity is the ability for matter to burn.
B) Reactivity is a type of chemical property that refers to matter that chemically combines with other substances.
C) Reactivity is a characteristic of matter that is observed after the chemical identity of matter has changed.
D) Reactivity is a characteristic of matter that can be observed or measured without changing the matter’s identity.