Put a few spoonfuls of water into a bottle with a tight lid. Make sure everything is at room temperature, measuring the temperature of the water with a thermometer to make sure. Now close the bottle and shake it as hard as you can for several minutes. When you’re exhausted and ready to drop, shake it for several minutes more. Then measure the temperature again. Make a rough calculation of the expected temperature change, and compare.
Chapter 3 USF Biology I – Water and Life Yellow: Vocabulary GREE: Key concepts Concept 3.1 – Polar covalent bonds in water molecules result in hydrogen bonding Polar covalent bonds: electrons of the covalent bonds spend more time closer to Oxygen than Hydrogen Polar molecule: overall charge of the molecule is unequally distributed *Negative () charge of the negative is attracted to the positive (+) charge of the hydrogen atom of the other H2O molecule, forming Hydrogen Bonding* Concept 3.2 – Four emergent properties of water contribute to earth’s suitability for life I. Cohesion of Water Molecul
