Final answer:
Corrosiveness is commonly expressed using the pH scale, which measures the activity of hydrogen ions in a solution and ranges from 0 to 14 to indicate acidity or alkalinity.
Step-by-step explanation:
The common way of expressing corrosiveness in terms of chemical properties is through the measurement known as pH. This scale ranges from 0 to 14 and is a measure of the activity of hydrogen ions in a solution, indicating the solution's acidity or alkalinity. A pH of 7 is neutral, showing neither acidic nor alkaline properties. pH values below 7 are acidic, and pH values above 7 are alkaline. The pH scale enables a quick determination of whether a given aqueous solution is acidic, basic, or neutral.