Zusammenfassung der Ressource
Water
- Structure
- Two molecules of hydrogen
bonded to an oxygen molecule.
- Polar molecule, which means
that attract and bone with the
nearest molecule who has a
negative charge to bond
- Electrons more
attrected to
oxygen than to
the hydrogen
molecules.
- States of matter
- The water can be in three
of the five states of
matter.
- Solid: molecules close from each other
- Liquid: molecules separated
by a short space
- Gas: after
overcome the
boiling point of
the water it
converts into
vapour
- Properties
- Universal solvent
- Cannot be compressed
- Its boiling poingt changes
according the altitude, caused
by the air pressure.
- Shape varies by the
interaction with gravity and
surface tension
- The pH of the water can change by
the interaction with the
environment
- Osmosis: movement of the water to be at the area with
more concentration of a solute
- Diffusion: Move the solute of an high
concentration area to the low one to maintain
an equilibrium.
- Capillary action: Cling to the surface and
separate partially from other water molecules
- Adhesion Attraction to the surface
- Cohesion: attraction of the water to the water
- Surface tension: Interaction between the molecules of hydrogen to bond and the help of the gravitational force