Water Flashcards
Water
- most important biochemical
- major component of all cells
- provides an environment for water organisms
Ice is less…
Dense than water
Water has quite high…
Boiling point compared to most of the chemicals
H2O molecules are connected by…
Hydrogen bond, which is quite weak
Too many hydrogen bonds make the substance…
Very strong
Hydrogen bond
Between hydrogen attached to an electronegative atom of one molecule and electronegative atom of another
Water has:
- high boiling point
-high specific heat capacity
-high surface tension
-high latent heat of vaporisation
All thanks to hydrogen bonds
Why is water a good solvent?
Because it’s polarity-slightly charged
Polar water
Partially negative dipoles of the water are attracted to positively charged components of the solute and vice versa
Water transports cells in…
Blood, lymphatic excretory and digestive systems of animals.
Thermal properties of water
- hydrogen bonding restricts the movement
- a lot of energy is needed to rise the temperature
Water’s thermal properties result in…
Slow environmental change =more stable habitats
Below 4 degrees the density of water
Decreases
Ice floats on water and…
Insulates water under.
Changes in density of water with…
Temperature cause currents, which maintains a circulation of nutrients in ocean
