Study Guide
Chemistry · AP
AP-aligned materials for 1.1 (Atomic structure and periodic trends). This topic is assessed on the AP Exam.
What this standard means
- Use quantum numbers and electron configurations.
- Demonstrate mastery on AP Exam-style questions for this topic.
_See printable PDF for diagram._
How to use the 20 practice sets
| Sets | When to use | | --- | --- | | 1–5 | Intro — explore together, short written items | | 6–10 | Core skills — diagrams and written practice | | 11–15 | Mixed review — explain thinking | | 16–20 | Stretch — word problems and mastery tasks |
Pacing: 10–15 minutes per session.
How to practice
1. Track units through stoichiometry conversions 2. Use Lewis structures before predicting geometry
_See printable PDF for diagram._
Common mistakes
- Balancing equations without checking atom counts
- Confusing moles with mass or volume
Review and practice tests
1. Start Review 1/10 when sets 1–3 feel comfortable. 2. Move up one review level with little help. 3. Use Practice Test 4/10–6/10 for mid-standard checks. 4. Practice Test 10/10 is the mastery bar for 1.1.
- [ ] Represents chemical change with balanced equations
- [ ] Calculates quantities with mole relationships
- [ ] Links structure to properties and reactivity
Materials for this standard
- Practice Problems — 20 printable sets
- Review — 10 difficulty levels
- Practice Test — 10 difficulty levels
- Answer key — for parents and tutors