Which of the following is a physical property? a. flammability b. heat of combustion c. solubility d. toxicity

I think it would be solubility but I’m not sure

Option (C) is the correct answer.

Explanation:

A property that does not cause any difference in the chemical composition of the atom is known as a physical property.

For example, boiling point, mass, density, melting point, solubility etc are physical properties.

On the other hand, a property that that cause difference in the chemical composition of a substance is known as a chemical property.

For example, combustion, toxicity, flammability etc are chemical properties.

Therefore, we can conclude that out of the given options solubility is a physical property.

a polar bond is formed when electrons are shared unevenly between atoms

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.