CEM 141 MSU EXAM 3 QUESTION BANK 2026 CHEMISTRY FUNDAMENTALS REVIEW UPDATED A+

CEM 141 MSU EXAM 3 QUESTION BANK
2026 CHEMISTRY FUNDAMENTALS REVIEW
UPDATED A+

◉ trans isomer definition
Answer: the H are on opp sides of the double bond - they're opposite
of what they were


◉ cis isomer
Answer: the H are on the same side of the double bond - they're the
same as what they were


◉ how do u tell if molecules are the same or if they're isomers?
Answer: if they're the same, the longest chain length is the same


◉ what does a single bond look like in orbitals?
Answer: it's a sigma bond! they're end to end overlap of orbitals.
they have free rotation


◉ alkEne
Answer: double bond

, ◉ alkAnes
Answer: A singular bond


◉ formula for hydrocarbon containing "n" C atoms
Answer: Cn H2n+2


◉ what if a hydrocarbon doesn't fit the Cn H2n+2 formula?
Answer: it's not an alkAne then


◉ do pi bonds allow for rotation?
Answer: nope! that's a double bond. so both sides of the p orbital are
bonded. if u tried to rotate it, the double bond would break


◉ alkYne
Answer: Y are there so many bonds?! it's a triple bond


◉ formal charge equation
Answer: formal charge = #VE - sticks - dotes


◉ what does it mean when the formal charge = 0?
Answer: it bonds as expected