Seawater properties I

What is electronegativity

A measure of the tendency of an atom to attract a shared pair of electrons in a covalent bond

What is significant in terms of electronegativity of O and H molecules

O is far more electronegative than H

Electronic charges pulled towards O and away from H

interactions between water molecules that are particularly strong

Dipole

Must overcome hydrogen bonds between H2O molecules

Melting and freezing

Cause water to have a high heat capacity

Hydrogen bonds

what are the negtvely and positively charged ions in salts called

cations ( + )

anions ( -)

how does salty sea affect aerosol formation

sea salt injected into the atmosphere via sea spray

where is hydrothermal vent activity most prevelant

at/ near spreading centres

what happens when CO2 enters water

acidifies water upon dissolution

what is the difference between particulate and dissolved material

most particulate will sink (negatively buoyant)

what is significant about water density at low temperatures

shows more dense packaging at low temperatures

what temperature is the maximum density of liquid water

3.98*C

above what salinity is the temperature of the highest density above that of pure water

24.7

what are dissolved ions surrounded by in the ocean

a layer of water dipoles

how are cations and ions held together

by electrostatic forces