PFAs Flashcards
How long do PFAs stay?
forever
What are the structures of PFAs?
hydrogens on a carbon chain are replaced by fluorines
How many covalent bonds and how many electrons are shared in a single line?
1 covalent bond, 2 electrons shared
How many covalent bonds and how many electrons are shared in a double line?
2 covalent bonds, 4 electrons shared
How many covalent bonds and how many electrons are shared in a triple line?
3 covalent bonds, 6 electrons shared
How many bonds does carbon always form in a chain?
4
How are electrons shared in a pure (nonpolar) covalent bond?
equally
How are electrons shared in a polar covalent bond?
unequally
How are electrons shared in an ionic bond?
electrons are transfered
Is there any sharing of electrons in an ionic interaction?
no sharing at all
Like dissolves
like
What do polar molecules interact with?
other polar molecules
Will nonpolar molecules interact with polar molecules?
no
Is water a polar molecule?
yes, covalent compound with polar covalent bonds
What governs if a substance will interact with water?
If that substance is similarly polar
The longer the chain…
the more solid it will be
Are lipids nonpolar or polar?
almost entirely nonpolar, they are water-fearing and hydrophobic
What is the phospholipid bilayer?
The human body can generate membranes/micelles that are hydrophilic on the outside, hydrophilic tails in between two hydrophilic heads
What is the condensed structural formula of methanol, number of carbon atoms, and solubility in water?
CH3-OH
1
soluble
What is the condensed structural formula of ethanol, number of carbon atoms, and solubility in water?
CH3-CH2-OH
2
soluble
What is the condensed structural formula of 1-propanol, number of carbon atoms, and solubility in water?
CH3-CH2-CH2-OH
3
soluble
What is the condensed structural formula of 1-butanol, number of carbon atoms, and solubility in water?
CH3-CH2-CH2-CH2-OH
4
slightly soluble
What is the condensed structural formula of 1-pentanol, number of carbon atoms, and solubility in water?
CH3-CH2-CH2-CH2-CH2-OH
5
insoluble
What do amino acids fold into?
proteins in aqueous environment
What are amino acids categorized by?
their side chains
How often are nonpolar amino acids exposed to the polar aqueous environment in a folded globular protein?
rarely
