[6] Calculate the percent change of pH for the buffer using the formula below. Percent Change of pH = 100% x ( pH at 5 drops - pH at 0 drops ) / ( pH at 0 drops )

The teacher is mostly talking about the distillation of a mixture

For lesson: cameras, plant presses, newspaper, paper towels, clip boards, pencils, calculators, field guides, metric measuring tapes, paper, transect squares, colored pencils, ph meters, light meters, computers, etc.for extension: baggies for soil samples collecting, distilled water, hand shovels, beakers, boiled rice, microscopes, well microscope slides or regular microscope slides with cover slips