Water - Liquid Awesome: Crash Course Biology #2 Review
surface tension
A measure of how difficult it is to stretch or break the (cohesion force) surface of a liquid
Solution
A mixture that forms when one substance dissolves another.
A hydrophobic substance
A molecule that cannot break the cohesive forces of water and therefore is fearful of water
Solute
A substance that is dissolved in a solution.
Hydrogen bonds
Attraction between negative Oxygen atom and a more positive Hydrogen atom of different water molecules
Cohesion
Attraction between two objects that are the same (water to water)
Water is less dense as a solid
Because of hydrogen bonds spreading water molecules out during bonding to form a lattice formation
Polarity
Difference in charge within the molecule
Capillary action
Movement of water through a tube against gravity through adhesion and cohesion
"Like dissolves like"
Polar objects dissolve other polar objects. Non-polar objects dissolves non-polar objects
Water is a polar molecule because
The O and H ends of the molecule have different charge, allowing the O of one molecule to attract the H of a nearby molecule
principle behind sweating
Water removing heat to regulate the bodies temperature
Solid, Liquid and Gas
What are the forms of water called?
Two hydrogen atoms and one oxygen atom
What is water made up of?
high heat capacity
absorbs and releases large amounts of heat before changing temperature
Water is an excellent _____________
solvent