AP Chemistry Unit 3 Practice

Instructions

  1. Choose a topic, then start. Mixed review includes all thirteen topics.
  2. Select one answer, or enter a number and choose its unit. For a count, choose count; for a ratio, choose no units.
  3. Submit once per question. Read the explanation, then continue. Your score counts correct answers; a significant figure note does not remove a point.
  4. At the end, Try again shuffles the questions and answer choices. Choose another topic to build a new set.

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AP Chemistry · Unit 3

Catch up at your own pace.

Choose one topic for six questions, or Mixed review for all 78. Read the feedback after each answer.

No timer. Use scratch paper and a calculator. Reference values are below.

Reference

Gas, solution and light reference

Use temperatures in kelvin for gas law calculations. Keep extra digits in your work and round only the final answer.

R = 0.08206 L·atm/(mol·K) = 8.314 J/(mol·K)

1 atm = 760 mmHg = 101.3 kPa

Planck constant: h = 6.626 × 10−34 J·s

Speed of light in vacuum: c = 3.00 × 108 m/s

Avogadro constant: 6.022 × 1023 mol−1

Gas laws: PV = nRT. Partial pressure = mole fraction × total pressure. Molarity = moles of solute / liters of solution.

Light: E = hν and c = λν. Beer-Lambert law: A = εbc. Absorbance and retention factor Rf have no units.

Atomic masses (g/mol)

H
1.01
C
12.01
N
14.01
O
16.00
Na
22.99
Mg
24.31
Al
26.98
S
32.06
Cl
35.45
K
39.10
Ca
40.08
Fe
55.85

Aligned practice for AP Chemistry CED topics 3.1 to 3.13. Original ZornScience questions.

About this activity

Review AP Chemistry Unit 3, Properties of Substances and Mixtures, with 78 original questions. Each answer gets an explanation right away, and your score is broken down by topic.

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