students typically add acid-base indicators to various
substances,including various solutions from the stockroom, as well as household chemicals.
Students then record data into their lab notebooks and answer a set of questions relating to
the substances’ pHs (if any questions are present at all). Students are graded on how close
they come to the solutions’ accepted pHs and how well they answered the required questions.
An extension might be added later, in which the students use titrations to figure out the
concentration of an unknown acid or base solution