water Flashcards
properties of water
- medium in all reactions
- reactent in photosynthesis
- major habitat
- major component in blood
- major component in sweat
describe the water molecule
- consists of hydrogen and oxygen
- covalent bond
- polar
- v shapes (104.5)
what are water molecules attracted to each other by
weak electrostatic forces of attraction (hydrogen bonds)
why does water have a high melting point and b.p
due to prescence of the hydrogen bonds
separation of charge
dipole
wwhy is waters dipole nature good
ir makes it good at transporting substances
why is water able to dissolve ionic compounds
it is an excellent solvent
what to hydrogen bonds inbetween water molecules allow
strong cohesion between water molecules
cohesion
attraction of water molecules to each other
why is water able to form hydrogen bonds with other molecules
due to adhesion
why does water flow easily
due to forces of cohesion and adhesion within a body of water
how is water a good solvent
water molecules surround the charged particles which breaks other molecules apart, leading to the molecules dissolving
importance of cohesion and adhesion
it allows water to travel up the xylem
what does it mean for water to be amphotheric
its able to act like an acid or a base
why is water less dense when it freezes
- it expands when the temperature cools which decreases its density
- due to the hydrogen bonds
