This document contains the agenda and notes for a 5th period chemistry class. The agenda includes announcements, a warm-up discussion on acids and bases, wrapping up the previous lesson on acids and bases, an assessment, and project work time. The notes section further explains acids and bases, how water molecules interact, how acidity is measured via pH and indicators, and the effects of increased carbon dioxide in oceans. Students are assigned a group project to create an educational material on acids and bases for a younger audience.