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Your Instructors

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Each tutor specializes in the exact exam you're taking. They've been where you are โ€” and they know the exact moment things start to make sense.

Dr. Sofia Nakamura, chemistry tutor specializing in organic chemistry
Today's Concept

Electron Orbitals

MCAT Specialist

Dr. Sofia Nakamura

Orgo & Gen Chem ยท Stanford PhD

Explains orbital hybridization using molecular geometry โ€” the approach that finally makes spยณ click.

"Think of hybridization like mixing paint โ€” you don't get spยณ by accident."
HybridizationMO TheoryLewis Structures
4.97
2,340 sessions
Marcus Webb, thermodynamics tutor and MIT graduate student
Today's Concept

Gibbs Free Energy

AP Chem Expert

Marcus Webb

Thermodynamics ยท MIT Grad

Breaks down ฮ”G = ฮ”H โˆ’ Tฮ”S with real-world examples that make spontaneity intuitive, not memorized.

"Spontaneity isn't magic โ€” it's just entropy winning the argument."
ThermodynamicsKineticsEquilibrium
4.95
1,890 sessions
Priya Chandrasekaran, biochemistry tutor at Johns Hopkins
Today's Concept

Acid-Base Equilibria

Gen Chem Pro

Priya Chandrasekaran

Biochemistry ยท Johns Hopkins

Henderson-Hasselbalch becomes second nature after her buffer system walkthrough โ€” students call it "the buffer breakthrough."

"Once you see pH as a ratio, not a number, everything changes."
Acid-BaseBuffersTitration
4.98
3,120 sessions
The Comparison

Chemistry is hard enough. Your tools shouldn't be.

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Feature
Studying Alone
Generic Platform
โœฆ RecommendedCatalyst Community
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Daily, 7amโ€“11pm
Peer-explained solutions
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MCAT/AP/Gen Chem problem sets
Generic textbook
Some
800+ curated problems
24/7 study room access
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Expert tutor office hours
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Real Students ยท Real Wins

The community is already grinding for you.

Every message below is from a real student in the Catalyst community โ€” this is what studying together looks like.

Maya C. MCAT student celebrating exam success
Maya C.MCAT
2 min ago

just got a 92 on my orgo midterm ๐Ÿ”ฅ

Jordan R. AP Chemistry student sharing study breakthrough
Jordan R.AP Chem
8 min ago

Finally understand equilibrium constants โ€” Dr. Sofia explained it in 10 mins

Priya S. Gen Chem student celebrating retake success
Priya S.Gen Chem
15 min ago

Scored 87% on my retake after the buffer walkthrough!

Marcus T. MCAT student after live tutoring session
Marcus T.MCAT
22 min ago

The live session tonight just unlocked thermodynamics for me

Aisha W. AP Chem student completing practice sets
Aisha W.AP Chem
31 min ago

finished my 5th practice set this week ๐Ÿ’ช exam is in 3 weeks

Sam L. Gen Chem student in late-night study session
Sam L.Gen Chem
45 min ago

study room at 11pm saved me โ€” someone explained Hess's Law live

Lily K. MCAT student sharing biochemistry grade improvement
Lily K.MCAT
1 hr ago

passed biochem with a B+ after 3 weeks in the community ๐Ÿ™Œ

Devon P. AP Chemistry student praising peer explanations
Devon P.AP Chem
1.5 hr ago

the peer explanations are better than my professor's honestly

Maya C. MCAT student celebrating exam success
Maya C.MCAT
2 min ago

just got a 92 on my orgo midterm ๐Ÿ”ฅ

Jordan R. AP Chemistry student sharing study breakthrough
Jordan R.AP Chem
8 min ago

Finally understand equilibrium constants โ€” Dr. Sofia explained it in 10 mins

Priya S. Gen Chem student celebrating retake success
Priya S.Gen Chem
15 min ago

Scored 87% on my retake after the buffer walkthrough!

Marcus T. MCAT student after live tutoring session
Marcus T.MCAT
22 min ago

The live session tonight just unlocked thermodynamics for me

Aisha W. AP Chem student completing practice sets
Aisha W.AP Chem
31 min ago

finished my 5th practice set this week ๐Ÿ’ช exam is in 3 weeks

Sam L. Gen Chem student in late-night study session
Sam L.Gen Chem
45 min ago

study room at 11pm saved me โ€” someone explained Hess's Law live

Lily K. MCAT student sharing biochemistry grade improvement
Lily K.MCAT
1 hr ago

passed biochem with a B+ after 3 weeks in the community ๐Ÿ™Œ

Devon P. AP Chemistry student praising peer explanations
Devon P.AP Chem
1.5 hr ago

the peer explanations are better than my professor's honestly

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