water Flashcards
1
Q
what makes water molecule polar?
A
- unevenly distributed charge
- partially pos/neg regions
- forms hydrogen bonds
2
Q
how many hydrogen bonds can water make?
A
4
3
Q
why can water not dissolve non-polar substances
A
they have no regions of charge so cannot be attracted to water’s charges
4
Q
characteristics of water
A
- important solvent in reactions
- efficient transport medium
- acts as a coolant
- provides a habitat
5
Q
how does important solvent in reactions relate to a function?
A
- polar molecules dissolve in water
- many solutes can dissolve within the cell
6
Q
how does efficient transport medium relate to a function?
A
effects of cohesion and adhesion result in capillary action
7
Q
how does acts as a coolant relate to a function
A
- high specific heat capacity
- maintains constant temp
- enzymes don’t denature or reduce in activity
8
Q
how does provides a habitat relate to a function
A
- water buffers temperature
- cohesion provides surface tension to water
- ice is less dense than liquid water
- ice floats forming insulating layer
9
Q
capillary action
A
this is the process by which water can rise up a narrow tube against the force of gravity
