six elements necessary for life
CHNOPS (carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur)
3 molecules that contain elements necessary for life
H2O, O2, lipids
polar molecule
unequal distribution of charges, dissolves in water
nonpolar molecule
equal distribution of charges, does not dissolve in water
cohesion
attraction between molecules of the same substance
adhesion
attraction between molecules of different substances
high specific heat
temperature of water does not change easily
less dense as a solid
ice floats on water
terrific solvent
most universal solvent
matter
anything that has mass and takes up space
atom
the smallest part of an element
cell
most basic unit of life
surface tension
how difficult it is to stretch or break the surface of a liquid
solution
uniform mixture of two or more substances
solute
what is dissolved
solvent
what does the dissolving
hydrophilic
has an affinity for water
hydrophobic
does not have an affinity for water