AP BIOLOGY

Detailed explanation-1: -Water has an unusually high surface tension because of the relatively high attraction of water molecules to each other through a web of hydrogen bonds, water has a higher surface tension than most other liquids.

Detailed explanation-2: -When the molecules of a liquid like water have hydrogen bonding (a strong intermolecular force), it causes the substance to have a high surface tension. This is because the hydrogen bonding causes molecules of a liquid to be strongly attracted towards each other.

Detailed explanation-3: -Water has an amazing ability to adhere (stick) to itself and to other substances. Hydrogen bonds form when hydrogen atoms covalently bonded to nitrogen (N), oxygen (O), or fluorine (F) in the form of covalent compounds such as ammonia (NH3), water (H2O) and hydrogen fluoride gas (HF).

Detailed explanation-4: -The results show that the strengthening of hydrogen bonding between acetone and water will gradually weaken the surface tension of the solutions.