Properties of Water Flashcards
H20
A polar molecule joined together by covalent bonds
Hydrogen bonding
A process where polar molecules like water bond together to from a temporary bond that is 20 times weaker than a covalent bond
Cohesion
Molecules sticking to each other
Surface tension
Hydrogen bonds at the surface of a molecule point in the same direction creating a strong surface, more H-bonds on surface than interior
Xylem
plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and provides physical support through cohesion and Adhesion
Adhesion
Adhering (Sticking) to a surface or object
Temperature
the measure of average kinetic energy in molecules
Heat
transfer of kinetic energy from one body of matter to another
Specific heat
the amount of heat that must be absorbed or lost for 1 gram of a substance to change its temperature by 1 degree
Evaporative cooling
Making water evaporate and using its high specific heat capacity to absorb lots of heat to cool down when temperatures are high
Waters specific heat characteristic
Very high due to hydrogen bonding
Why ice floats
Its hydrogen bonds are done from a further distance making it less dense than water
Is water a solvent or solute
It is a good solvent due to its polarity
Hydrophilic
Polar or ionic molecules that can be dissolved and like water
Hydrophobic
Molecules that are non polar and not ionic that can’t be dissolved and fear water
