UniGeniusAP Chemistry

AP Chemistry

The AP Chemistry exam in 2027

3 hours 15 minutes in two sections, each worth half the score: 60 multiple-choice questions in 90 minutes, then 7 free-response questions in 105 minutes. You read the questions in the Bluebook app and handwrite free-response answers in a paper booklet.

Section I60 multiple-choice questions, 90 minutes, 50% of the score
Section II7 free-response questions, 105 minutes, 50% of the score
CalculatorAllowed on both sections, with the periodic table and the equations sheet
DateThursday, May 6, 2027, Session 2

The two sections

  • Section I: 60 multiple-choice questions in 90 minutes. Some stand alone; others come in sets built around the same data or stimulus.
  • Section II: 7 free-response questions in 105 minutes: 3 long questions worth 10 points each and 4 short questions worth 4 points each, 46 points in all.
  • It is a hybrid digital exam: you read every question in Bluebook, and you write free-response answers by hand in a paper booklet.
  • A calculator is allowed on both sections; College Board recommends a scientific or graphing one. The periodic table and the equations and constants sheet are provided.

The nine units and their weights

  • Unit 1: Atomic Structure and Properties, 7–9% of Section I
  • Unit 2: Compound Structure and Properties, 7–9%
  • Unit 3: Properties of Substances and Mixtures, 18–22%
  • Unit 4: Chemical Reactions, 7–9%
  • Unit 5: Kinetics, 7–9%
  • Unit 6: Thermochemistry, 7–9%
  • Unit 7: Equilibrium, 7–9%
  • Unit 8: Acids and Bases, 11–15%
  • Unit 9: Thermodynamics and Electrochemistry, 7–9%

Pacing

Section I gives you 90 seconds a question. In Section II, plan about 23 minutes for each long question and 9 minutes for each short one. Answer every part: free-response points are earned one at a time, so a later part can still score after a slip earlier on.

Try 2 questions

Question 1
What volume does 4.20 g of N₂ gas occupy at 30.0 °C and 0.950 atm? Assume ideal behavior.
Question 2
Titration curve: pH against volume of 0.100 M NaOH added to 20.0 mL of a weak acid HA. 0 mL, pH 2.80; 2 mL, pH 3.66; 4 mL, pH 4.00; 6 mL, pH 4.24; 8 mL, pH 4.43; 10 mL, pH 4.60; 12 mL, pH 4.78; 14 mL, pH 4.97; 16 mL, pH 5.20; 18 mL, pH 5.56; 20 mL, pH 8.65; 22 mL, pH 11.68. The steep rise is centered on 20 mL.pH. 0: pH 2.8; 2: pH 3.66; 4: pH 4; 6: pH 4.24; 8: pH 4.43; 10: pH 4.6; 12: pH 4.78; 14: pH 4.97; 16: pH 5.2; 18: pH 5.56; 20: pH 8.65; 22: pH 11.68pH02.557.51012.502468101214161820222.83.6644.244.434.64.784.975.25.568.6511.68pHVolume of NaOH added (mL)
Chart values
CategorypH
02.8
23.66
44
64.24
84.43
104.6
124.78
144.97
165.2
185.56
208.65
2211.68
The curve shows the titration of 20.0 mL of a weak monoprotic acid, HA, with 0.100 M NaOH at 25 °C. Based on the curve, what is the approximate value of Ka for HA?

Next step

Take the free diagnosticTake the course tour

College Board's AP Chemistry exam page

Questions people ask

How long is the AP Chemistry exam?

3 hours 15 minutes: Section I is 90 minutes and Section II is 105 minutes.

When is the AP Chemistry exam in 2027?

Thursday, May 6, 2027, in Session 2. Your AP coordinator confirms the exact time and place.

How many questions are on the AP Chemistry exam?

67: 60 multiple-choice questions in Section I and 7 free-response questions in Section II.

Can you use a calculator on the AP Chemistry exam?

Yes, on both sections. College Board recommends a scientific or graphing calculator, and the periodic table and the equations and constants sheet are provided.