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  3. AP Chemistry CRAM – Unit 1: Atomic Structure & Properties

ap chemistry cram – unit 1: atomic structure & properties

originally streamed in 2020 with Wes WinterTeacher
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Get ready for your AP Chemistry exam with this complete Unit 1 review covering atomic structure and properties. This session walks you through moles, isotopes, electron configurations, periodic trends, and more. Perfect for students preparing for th ...more

curriculum note

This video references a modified 2020 AP Chemistry exam format (Units 1–7 only, open notes) that no longer applies. The current AP Chemistry exam covers all 9 units under standard testing conditions.

covered in this stream

units
Unit 1 – Atomic Structure & Properties
topics
1.1 Moles and Molar Mass1.2 Mass Spectroscopy of Elements1.3 Elemental Composition of Pure Substances1.5 Atomic Structure and Electron Configuration1.6 Photoelectron Spectroscopy1.7 Periodic Trends1.8 Valence Electrons and Ionic CompoundsEmpirical and Molecular FormulasUnit 1 Review

timestamps

  • 0:00

    Introduction and Greetings

  • 0:37

    Viewer Locations Check-In

  • 1:38

    AP Test Format Update

  • 2:41

    Preparing for Chemistry Session

  • 4:15

    Atomic Structure Overview

  • 6:20

    Today's Topics Plan

  • 7:22

    Sulfur Atom Basics

  • 8:28

    Mole Definition Explained

  • 10:00

    Sulfur Isotopes Discussion

  • 11:39

    Average Atomic Mass Calculation

  • 14:46

    Mass Spectrometry Graph

  • 15:49

    Isotope Properties Comparison

  • 17:52

    Molecular vs Empirical Formulas

  • 19:28

    Empirical Formula Example

  • 22:32

    Solving Formula Problem

  • 29:26

    Quantum World Introduction

  • 30:30

    Coulomb's Law Factors

  • 33:08

    Electron Configurations Vocabulary

  • 37:19

    Orbital Shapes and Capacities

  • 38:55

    Sulfur Electron Configuration

  • 43:36

    Photoelectron Spectroscopy Graphs

  • 47:11

    Octet Rule and Ions

  • 49:47

    Ion Configuration Example

  • 52:58

    Valence Electrons and Ions

  • 55:03

    Periodic Trends Definitions

  • 56:05

    Trends Directions Explained

  • 59:11

    Energy Levels in Trends

  • 1:00:44

    Nuclear Charge Effects

  • 1:02:19

    Session Wrap-Up and Questions

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© 2026 Fiveable Inc. All rights reserved.

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Fiveable

Study Content & Tools

Study GuidesFRQs + AI ScoringAP Essay Grader for StudentsAI Grading for TeachersPractice QuestionsGlossaryScore Calculators

Company

What's New?PricingBulk DiscountsTestimonialsFAQsEmail us

Resources

AP Exam Schedule 2027AP ClassesAP ClassroomEasiest AP ClassesHardest AP ClassesAP vs IBAP vs Dual EnrollmentAP vs Honors ClassesAP Scholar Awards

history

🌎 ap world history🇺🇸 ap us history🇪🇺 ap european history

social science

✊🏿 ap african american studies🗳️ ap comparative government🚜 ap human geography💶 ap macroeconomics🤑 ap microeconomics🧠 ap psychology👩🏾‍⚖️ ap us government

english & capstone

✍🏽 ap english language📚 ap english literature🔍 ap research💬 ap seminar

arts

🎨 ap art & design🖼️ ap art history🎵 ap music theory

science

🧬 ap biology🧪 ap chemistry♻️ ap environmental science🎡 ap physics 1🧲 ap physics 2💡 ap physics c: e&m⚙️ ap physics c: mechanics

math & computer science

🧮 ap calculus ab♾️ ap calculus bc📐 ap precalculus📊 ap statistics💻 ap computer science a⌨️ ap computer science p

world languages

🇨🇳 ap chinese🇫🇷 ap french🇩🇪 ap german🇮🇹 ap italian🇯🇵 ap japanese🏛️ ap latin🇪🇸 ap spanish language💃🏽 ap spanish literature

go beyond AP

high school exams

✏️ PSAT🎓 Digital SAT🎒 ACT

honors classes

🍬 honors algebra II🫀 honors anatomy🐇 honors biology👩🏽‍🔬 honors chemistry💲 honors economics📐 honors geometry⚾️ honors physics📏 honors pre-calculus📊 honors statistics🗳️ honors us government🇺🇸 honors us history🌎 honors world history

college classes

👩🏽‍🎤 arts👔 business🎤 communications🏗️ engineering📓 humanities➗ math🧑🏽‍🔬 science💶 social science

hs classes

🏛️ alabama history⛰️ appalachian studies🌴 california history🌍 earth science🌐 ethnic studies🐊 florida history🍑 georgia history🌎 global studies🌺 hawaiian studies📰 journalism🪶 native american studies🌵 new mexico history🤠 oklahoma history⚗️ physical science🎙️ speech and debate🤝 texas government🤠 texas history🌲 washington state history🕊️ world religions
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© 2026 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.