Properties of Water PDF
Document Details
Uploaded by AdjustableGray6290
KU Leuven
Tags
Summary
This document explains the properties of water, such as its polarity, cohesion, adhesion, and high specific heat. It also describes water as a universal solvent and how it affects temperature regulation in organisms.
Full Transcript
# Properties of Water ## Polar - Polar covalent bonds between oxygen and hydrogen in the water molecule - Hydrogen bonds between oxygen and hydrogen between water molecules ## Cohesion/Adhesion - **Cohesion:** Water molecules attracted to other WATER molecules - **Adhesion:** Water molecules att...
# Properties of Water ## Polar - Polar covalent bonds between oxygen and hydrogen in the water molecule - Hydrogen bonds between oxygen and hydrogen between water molecules ## Cohesion/Adhesion - **Cohesion:** Water molecules attracted to other WATER molecules - **Adhesion:** Water molecules attracted to other POLAR substances - Together leads to **Capillary Action** ## Universal Solvent - Partial negative oxygen binds with other polar molecules (partial positive end) and to positively charged ions (cations) - Partial positive hydrogen binds with other polar molecules (partial negative end) and to negatively charged ions (anions) ## Surface Tension - Cohesion develops a "surface" based on the interaction of hydrogen bonds - Allows you to skip rocks or water striders to walk on water ## Less Dense When Solid - Hydrogen bonds inhibit compaction - Ice floats; temperature buffer ## High Specific Heat - Water must absorb or release a large amount of energy to change 1 gram of water by 1°C. ## Evaporative Cooling - Release water on surface of organism to absorb heat energy from body (and break the bonds cooling down the organism). ## pH - pH = - log [H+] - As the concentration of hydronium/hydrogen ion increases, the pH decreases.
