At what temperature does pure water attain its maximum density under standard atmospheric pressure?

💡 Solution & Explanation

Pure water exhibits an anomalous expansion behavior between 0 degrees Celsius and 4 degrees Celsius, contracting as it warms up and thereby attaining maximum density at 4 degrees Celsius. At 0 degrees Celsius, water begins to freeze into a less dense crystalline structure, which causes ice to float on liquid water. Temperatures like 100 degrees Celsius mark the boiling point of water under standard atmospheric conditions.