ScienceChemistry path

Introductory Chemistry

Connect the particles inside an atom to the patterns shown on the periodic table.

Ready now: 3 lessons
Time: About 27 minutes
Level: High school foundation

Your path

Move one idea at a time.

Follow the order for a foundation or jump to the lesson you need. Each ready lesson includes a worked example, an active attempt, feedback, and a teach-back prompt.

Atomic structure
Use particle charge, location, and count to describe an atom.
1. 1.1
  Protons, neutrons, and electrons
  About 8 minutesReady
  Start
2. 1.2
  Isotopes and average atomic mass
  About 10 minutesReady
  Start
Bonding and compounds
Use electron behavior and periodic-table patterns to compare common compound types.
1. 2.1
  Ionic and covalent compounds
  About 9 minutesReady
  Start

Introductory Chemistry

Move one idea at a time.

Atomic structure

Bonding and compounds