week 2 Flashcards
covalent bond
atoms share unpaired electrons
polar-covalent bond
atoms shared unequally in electronegativity in a covalent bond
molecule
atoms joined in covalent bonds
ionic molecules
unbalanced molecules
hydronium
takes proton
hydroxide
loses proton
acid
proton-donor molecules
base
proton-accepter
Cohesion
Like molecules attract eachother
specific heat
H bonds make H2O harder to heat
heat of vaporization
elevated boiling point
adhesion
Different molecules attract eachother
hydrophilic
polar; loves water
hydrophobic
non-polar; cant react w water
lake stratification
water stratifies into layers in winter & summer
lake turnover
disrupts stratification
anabolism
high free energy, constructs molecules
catabolism
breaks down molecules, low free energy
First trophic level
Primary producer
Second trophic level
Primary consumer