Which characteristic of a substance is considered a chemical property?
its boiling point
its reactivity
its density
its conductivity

reactivity

Explanation:

a chemical reacting to another chemical is considered a Chemical property because chemicals react with other chemicals differently

It's reactivity is a chemical property since that's not determined by a substance's physical traits.

Explanation:

Boiling, density, and conductivity are all determined by factors that are physical, whereas reactivity is derived from chemical properties.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.