Water Flashcards
What are 3 factors of water
All outer shells are filled, neutral change overall, and strong covalent bonds
Although the water molecule is neutral and electrons are shared evenly by each atom, which atoms attracts the electron more strongly
The oxygen atom
Which atom is larger with more protons?
The oxygen atom
Since the oxygen atom is larger with more protons what does it have
Greater electronegativity
Therefore what do the shared electrons spend more time closer to
The oxygen atom
What does the oxygen side of the molecule have?
A magnet like negative charge
What do the hydrogen atoms have?
A positive charge
What is it called when parts of a molecule have positively and negatively charged ends
Polarity
Since the laws of attraction and repulsion are at work in any soultion of water what is happening?
There are forces pushing the molecules around.
What gives water the special physical properties that are excellent for promoting life?
Huge numbers of hydrogen bonds
What is cohesion
Water molecules stick to eachother
What is surface tension
The measurement of how difficult it is to break the surface of a liquid
What is adhesion
Water molecules stick to other polar substances
What explains how things dissolve in water
Adhesion
What substance is less dense as a solid then as a liquid
Water
Why is water less dense as a solid than as a liquid
Hydrogen bonding
What does frozen water do
Float
What are important ramifications for life?
Promotes water circulation in bodies of water, regulates climate, ensures transition from season to season
What is the most important quaility of water
It dissolves water making it an excellent solvent
Water provides an excellent medium for things to mix together. True or False
True
What do water molecules do when a non polar molecule is added to water?
Act to exclude the non polar substance
Why are they all forced together in one stop
Water molecules only associate with eachother
Are non polar molecules hydrophobic or hydrophillic
Hydrophobic
What is hydrogen bonding
Non polar molecules bonding together in water
