QUESTIONS AND ANSWERS SURE A+
✔✔alkane - ✔✔all single bonds and no rings; saturated with H; CnH2n+2
✔✔methane - ✔✔CH4
✔✔ethane - ✔✔C2H6
✔✔propane - ✔✔C3H8
✔✔butane - ✔✔C4H10
✔✔iso prefix - ✔✔branch on 2nd to last C
✔✔neo prefix - ✔✔branch on last C
✔✔pentane - ✔✔C5H12
✔✔hexane - ✔✔C6H14
✔✔1 kcal/mol - ✔✔H-H eclipse
✔✔1.4 kcal/mol - ✔✔CH3-H eclipse
✔✔2.6 kcal/mol - ✔✔CH3-CH3 eclipse
✔✔anti-conformation - ✔✔the lowest-energy arrangement (methyls as far apart from
each other as possible)
✔✔gauche conformation - ✔✔arrangement higher in energy than the anti-conformation
but still without eclipsing interactions (methyls are 60 degrees apart from each other)