Uploaded January 2026 | Updated September 2026, 1 week ago
Stop flipping molecules in your head! Assign R and S configuration in seconds using the "Hand Trick." It's the fastest way to solve wedges, dashes, and Fischer projections without mental rotation.
Whether you're dealing with a #4 group on a wedge, or a complex priority tiebreaker, this method works on any exam without redrawing, rotating, or molecular models. Chirality literally means "hand" in Greek, and R and S come from the Latin form right and left (rectus and sinister), so why not use your hands to solve the puzzle?
Related Units:
🧪Master Chirality and Stereochemistry with me: youtube.com/playlist?list=PLvUW25kBaMMupOdw1Wgy8YauiQ40J_5nx
For organic chemistry reaction mechanisms: youtube.com/playlist?list=PLvUW25kBaMMtvqt_IBtezyBX_kk447pxZ
For all of my ochem videos in one place: youtube.com/playlist?list=PLvUW25kBaMMuKRkW9gDV7vlAk4Y9WRU7c
🧪Support free education & more through Patreon! patreon.com/c/ChemistryinaNutshell
🥽As an Amazon Affiliate, I earn from qualifying purchases at no extra cost to you.
🥼Need a molecular model kit or other chem supplies? amazon.com/shop/chemnut?ccs_id=11f20bce-5f74-427b-85fb-bdf66849405a
🔬Start any shopping journey here: amzn.to/3IXuAcS
0:00 R/S Configuration: The "No-Rotation" Secret
0:17 The Standard Method (and the Mental Rotation Risk)
1:12 The "Standard Method" Where Students Struggle
1:33 THE HAND TRICK: Thumbs Back (Level 1)
2:11 The "R for Right" Rule
2:34 Wedges & Dashes: Thumbs Forward (Level 2)
3:03 Solving the "Forward-Facing" Lowest Priority Group
3:48 Fischer Projections: Thumbs Left (Level 3)
4:09 How to Handle Multiple Bond Tiebreakers
4:34 Solving the "Left-Forward" Lowest Priority Group
5:24 Beyond Carbon: Chiral Phosphorus (The Final Boss)
6:08 The R/S vs (+/-) Optical Activity Trap
6:20 Next: Mastering Optical Activity
Citations:
Paula Yurkanis Bruice, "Organic Chemistry" 8th ed
openstax.org/details/books/organic-chemistry
openstax.org/details/books/chemistry-2e
Music: youtu.be/lL6AsbG07xY
Images:
"mint leaves" by SummerTomato is licensed under CC BY 2.0. To view a copy of this license, visit creativecommons.org/licenses/by/2.0/?ref=openverse.
"Caraway fruits, informally called "seeds"" by Slick is licensed under CC0, public domain, en.wikipedia.org/wiki/Caraway#/media/File:K%C3%BCmmel_2012-07-08-9523.jpg
#OrganicChemistry #Stereochemistry #HandTrick #StudyHacks #ChemistryInANutshell
Stop flipping molecules in your head! Assign R and S configuration in seconds using the "Hand Trick." It's the fastest way to solve wedges, dashes, and Fischer projections without mental rotation.
Whether you're dealing with a #4 group on a wedge, or a complex priority tiebreaker, this method works on any exam without redrawing, rotating, or molecular models. Chirality literally means "hand" in Greek, and R and S come from the Latin form right and left (rectus and sinister), so why not use your hands to solve the puzzle?
Related Units:
🧪Master Chirality and Stereochemistry with me: youtube.com/playlist?list=PLvUW25kBaMMupOdw1Wgy8YauiQ40J_5nx
For organic chemistry reaction mechanisms: youtube.com/playlist?list=PLvUW25kBaMMtvqt_IBtezyBX_kk447pxZ
For all of my ochem videos in one place: youtube.com/playlist?list=PLvUW25kBaMMuKRkW9gDV7vlAk4Y9WRU7c
🧪Support free education & more through Patreon! patreon.com/c/ChemistryinaNutshell
🥽As an Amazon Affiliate, I earn from qualifying purchases at no extra cost to you.
🥼Need a molecular model kit or other chem supplies? amazon.com/shop/chemnut?ccs_id=11f20bce-5f74-427b-85fb-bdf66849405a
🔬Start any shopping journey here: amzn.to/3IXuAcS
0:00 R/S Configuration: The "No-Rotation" Secret
0:17 The Standard Method (and the Mental Rotation Risk)
1:12 The "Standard Method" Where Students Struggle
1:33 THE HAND TRICK: Thumbs Back (Level 1)
2:11 The "R for Right" Rule
2:34 Wedges & Dashes: Thumbs Forward (Level 2)
3:03 Solving the "Forward-Facing" Lowest Priority Group
3:48 Fischer Projections: Thumbs Left (Level 3)
4:09 How to Handle Multiple Bond Tiebreakers
4:34 Solving the "Left-Forward" Lowest Priority Group
5:24 Beyond Carbon: Chiral Phosphorus (The Final Boss)
6:08 The R/S vs (+/-) Optical Activity Trap
6:20 Next: Mastering Optical Activity
Citations:
Paula Yurkanis Bruice, "Organic Chemistry" 8th ed
openstax.org/details/books/organic-chemistry
openstax.org/details/books/chemistry-2e
Music: youtu.be/lL6AsbG07xY
Images:
"mint leaves" by SummerTomato is licensed under CC BY 2.0. To view a copy of this license, visit creativecommons.org/licenses/by/2.0/?ref=openverse.
"Caraway fruits, informally called "seeds"" by Slick is licensed under CC0, public domain, en.wikipedia.org/wiki/Caraway#/media/File:K%C3%BCmmel_2012-07-08-9523.jpg
#OrganicChemistry #Stereochemistry #HandTrick #StudyHacks #ChemistryInANutshell
