The course

• 1

  Start here

  One written test in three hours: 9 to 11 question clusters, 45 to 55 questions, about 60% multiple choice and 40% constructed response, 1 credit each.

  Free: A tour of the chemistry course
• 2

  Topic 1: Structures and Properties of Matter

  8 of the 24 questions on each timed check

  Free: The periodic table and atomic structureBonding, particle forces and designed materialsNuclear chemistry: decay, fission and fusionGases and solutions53 questions
• 3

  Topic 2: Chemical Reactions

  9 of the 24 questions on each timed check

  Predicting reactions and conserving massBond energy and reaction ratesEquilibrium and yieldFree: Acids and basesRedox and electrochemical cells48 questions
• 4

  Topic 3: Energy

  3 of the 24 questions on each timed check

  Heat, energy change and charged particles17 questions
• 5

  Topic 4: Waves and Electromagnetic Radiation

  1 of the 24 questions on each timed check

  Electromagnetic radiation and matter13 questions
• 6

  Topic 5: Matter and Energy in Organisms and Ecosystems

  1 of the 24 questions on each timed check

  Photosynthesis as a chemical system6 questions
• 7

  Topic 6: Engineering, Technology, and the Applications of Science

  2 of the 24 questions on each timed check

  Engineering design and trade-offs15 questions