Getting back to the beginning of the unit, learners use reactions with red cabbage juice to determine if solutions are acidic, neutral, or basic. This is a straightforward and classic investigation, but what you will appreciate is the...

Glimpse how pH changes during an acid-base titration by examining graphs.  It contains not only graphs of pH changes, but also a chart summarizing what indicator to choose for different changes. This is not truly a worksheet,...

Students make their own pH indicator from red cabbage. Red cabbage contains a chemical that turns from its natural deep purple color to red in acids and blue in bases. Students boil the cabbage to get the pH indicator.