What does this Organic Chemistry I cheat sheet cover?

It has 10 sections: Functional Groups, Naming, Resonance, Acid-Base, Stereochemistry, Conformations, SN1/SN2, Elimination, Alkene Addition and Alcohols. Together they cover the topics a typical Organic Chemistry I exam tests, including functional groups, nomenclature basics, resonance and formal charge and acid-base and pKa trends.

Is the organic chemistry cheat sheet free?

The first part is free to read on this page, with no account needed. The full sheet opens in the app with Unlimited ($4.99 a month or $19 for a semester), where you can edit it, print it or save it as a PDF. It is one US Letter page and prints cleanly in black and white or colour.

Can I bring this Organic Chemistry I cheat sheet to my exam?

Only if your course allows a note sheet, so check the syllabus. This one is a single US Letter page. If your exam allows a different size, such as a 3x5 or 4x6 index card or one page front and back, Cheat Sheet AI makes one at exactly that size from your own lecture notes.

The sheet was written by our engine from a standard course outline, then a second model fact-checked every formula and statement against it; it corrected 3 statements before publishing. Notation and emphasis vary between courses, so check it against your own lecture notes.

Can I make a Organic Chemistry I sheet from my own notes?

Yes. Upload your lecture slides, notes or study guide and Cheat Sheet AI writes a sheet in your course's notation, sized to exactly the space your exam allows. Your first sheets are free.

Chemistry & BioOrganic Chemistry I

Organic Chemistry Cheat Sheet — 1-page PDF

Functional groups, naming, resonance, acid-base, stereochemistry, mechanisms, alkenes, alcohols. The whole course on one dense, printable page for your midterm or final, with every formula typeset and worked examples where they help.

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For a specific exam: Organic Chemistry I Midterm 1 study sheet, Organic Chemistry I Final exam study sheet.

1 pageUS Letter
10 sections11 topics
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Preview of the one-page Organic Chemistry I cheat sheet: Functional groups, naming, resonance, acid-base, stereochemistry, mechanisms, alkenes, alcohols — the whole course, one page

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What’s on it

The topics a typical Organic Chemistry I exam tests, all on the one page.

Functional groups
Nomenclature basics
Resonance and formal charge
Acid-base and pKa trends
Stereochemistry: chirality, R/S, E/Z
Conformations
SN1 vs SN2
E1 vs E2
Alkene addition reactions
Markovnikov vs anti-Markovnikov
Alcohol reactions

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The free part, as text

The free part of the sheet, section by section. Unlock the full sheet to read the rest, edit any block, and print it or save it as a PDF.

01Functional Groups

Core groups

Group	General form	Suffix / prefix
alkane	C-C	-ane
alkene	C=C	-ene
alkyne	C≡C	-yne
alcohol	R-OH	-ol / hydroxy-
ether	R-O-R'	alkoxy-
aldehyde	R-CHO	-al / formyl-
ketone	R-CO-R'	-one / oxo-
carboxylic acid	R-CO2H	-oic acid
ester	R-CO2R'	-oate
amine	R-NH2	-amine / amino-
halide	R-X	fluoro-, chloro-, bromo-, iodo-

functional group: Atom/group that controls major reactivity; naming priority often follows this group.
hydrocarbon: Molecule containing only C and H.
saturated: Only C-C single bonds.
unsaturated: Contains $C = C$ or $C \equiv C$ .

Alkyl = substituent from alkane minus one H, e.g. methyl $CH X_{3} X^{-}$ , ethyl $CH X_{3} CH X_{2} X^{-}$ .
Aromatic ring: phenyl $C X_{6} H X_{5} X^{-}$ .
Alkene/alkyne reactions occur at $π$ bond.

02Resonance

Resonance rules

Rule	Meaning
move only $π$ e $^{-}$ / lone pairs	no atom movement
major forms	complete octets, more bonds, less charge separation
negative charge on more electronegative atom	O > N > C
equivalent forms	equal contributors

CarboxylateWhy is acetate stabilized?

Two equivalent resonance forms delocalize $-$ charge over both O atoms; bond order intermediate.

Watch out:Formal charges must sum to overall charge; draw all lone pairs before computing FC.

03Acid-Base

pKa

p K_{a} = - lo g K_{a}

Lower $p K_{a}$ = stronger acid.

Equilibrium

K_{a} = \frac{[ A ^{-} ] [ H ^{+} ]}{[ H A ]}

For $H A ⇌ H^{+} + A^{-}$ .

Acidity trends

More acidic when...	Reason
more electronegative atom bears $-$ charge	stabilizes charge
larger atom bears $-$ charge down a group	charge more diffuse
more resonance stabilization	delocalization
greater $s$ -character in conjugate base	sp > sp2 > sp3
electron-withdrawing groups nearby	inductive stabilization

04Stereochemistry

E/Z

Z: higher-priority groups on same side $;$ E: opposite sides

For alkenes using CIP priorities on each alkene carbon.

QuickAn alkene with highest-priority groups same side?

$Z$ .

Watch out:Do not use cis/trans unless each alkene carbon has one identical substituent and geometric naming is unambiguous.

05Conformations

conformation: Different spatial arrangement from rotation about $σ$ bonds; interconvert without bond breaking.

Ethane / butane

Conformation	Stability
staggered	lowest torsional strain
eclipsed	highest torsional strain
anti butane	lowest; bulky groups $18 0^{\circ}$ apart
gauche butane	higher; bulky groups $6 0^{\circ}$ apart

Strain

torsional + steric + angle strain

Contributes to conformational energy.

ChairCyclohexane substituent most stable position?

Equatorial usually preferred; axial has 1,3-diaxial interactions.

06Elimination

Zaitsev

more substituted alkene major

Typical E1/E2 product unless bulky base or constrained geometry.

Hofmann

less substituted alkene favored

Often with bulky base or quaternary ammonium leaving group.

Anti-periplanarE2 requirement?

$β$ -H and leaving group must be anti-periplanar for best overlap.

Watch out:E2 needs a strong base; E1 often competes with SN1 under solvolysis conditions.

07Alkene Addition

Common additions

Reagents	Outcome	Regio / stereo
HX	alkyl halide	Markovnikov
H2O, acid	alcohol	Markovnikov
X2	vicinal dihalide	anti addition
X2, H2O	halohydrin	OH on more substituted C
BH3 then H2O2/NaOH	alcohol	anti-Markovnikov, syn
H2, Pd/C	alkane	syn hydrogenation

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Also on the full Organic Chemistry I sheet

9 more sections, with every definition, formula and worked example. Unlimited unlocks every full sheet in the library to edit, print or save as a PDF, and makes unlimited sheets from your own notes.

Naming

Parent chain
Order
Common suffix priority

Resonance

resonance structures
Formal charge

Acid-Base

Hybridization acidity

Stereochemistry

chirality
enantiomers
diastereomers
CIP priority

Conformations

SN1/SN2

Key comparison
SN1
SN2

Elimination

E1 vs E2

Alkene Addition

Markovnikov
Anti-Markovnikov

Alcohols

Major reactions
Alcohol substitution

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FAQ

Questions

About the Organic Chemistry I sheet and making your own.

What does this Organic Chemistry I cheat sheet cover?: It has 10 sections: Functional Groups, Naming, Resonance, Acid-Base, Stereochemistry, Conformations, SN1/SN2, Elimination, Alkene Addition and Alcohols. Together they cover the topics a typical Organic Chemistry I exam tests, including functional groups, nomenclature basics, resonance and formal charge and acid-base and pKa trends.
Is the organic chemistry cheat sheet free?: The first part is free to read on this page, with no account needed. The full sheet opens in the app with Unlimited ($4.99 a month or $19 for a semester), where you can edit it, print it or save it as a PDF. It is one US Letter page and prints cleanly in black and white or colour.
Can I bring this Organic Chemistry I cheat sheet to my exam?: Only if your course allows a note sheet, so check the syllabus. This one is a single US Letter page. If your exam allows a different size, such as a 3x5 or 4x6 index card or one page front and back, Cheat Sheet AI makes one at exactly that size from your own lecture notes.
How accurate is it?: The sheet was written by our engine from a standard course outline, then a second model fact-checked every formula and statement against it; it corrected 3 statements before publishing. Notation and emphasis vary between courses, so check it against your own lecture notes.
Can I make a Organic Chemistry I sheet from my own notes?: Yes. Upload your lecture slides, notes or study guide and Cheat Sheet AI writes a sheet in your course's notation, sized to exactly the space your exam allows. Your first sheets are free.

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