Which of these is a chemical property of a substance?

a) texture

b) ductility

c) reactivity

d) conductivity

C)

Explanation:

Reactivity is a chemical property of a substance.

Ductility is a measure of a material's ability to undergo significant plastic deformation before rupture. Texture refers to the feel, appearance, or consistency of a surface. Conductivity is the measure of a material's ability to conduct an electric current.

The answer is C

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nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.