Which of these is a chemical property of aluminum?

Question

Aluminum has a density of 2.70 g · cm−3
Aluminum is silvery white in color.
Aluminum is highly reactive.
Aluminum is a soft metal.

Answer 1

The chemical property of aluminum from the options provided is "Aluminum is highly reactive."

Chemical properties are those that describe the behavior of a substance when it undergoes a chemical reaction, including reactivity with other substances. The other options describe physical properties: density, color, and softness.