This activity is acid-base titration lab where students determine the percent of calcium carbonate in an eggshell.

This activity will introduce pH testing of cleaning products, citrus fruits, and then analyzes a mystery Green product. Students will compare and contrast findings to discover an earth friendly product.

In this Spreadsheets Across the Curriculum module, students build spreadsheets and draw graphs to explore a chemical buffer's ability to resist pH change, i.e., the buffer capacity. Quantification of buffer capacity is conceptually straightforward but involves multiple repetitive calculations. The key relationship is the Henderson-Hasselbalch equation: , which follows from the Law of Mass Action and The spreadsheets automate many of the calculations, thereby simplifying the process. Instead of focusing on the calculations, students can see what buffer capacity means and focus on the a deeper understanding of its implications. After reviewing several buffer calculations, the stduents use the spreadsheet to investigate buffer capacity graphically and characterize blood's physiological buffer system. While solving the question of how many breaths one can take before alkalosis sets in, the students manipulate a logarithmic equation, do "what if" modeling, and analyze rates of change from plots of their cacluated results.

This activity is an inquiry-based investigation where students discover the indicators of chemical reactions (endothermic and exothermic) by collecting data and using that data to develop a testable question for further experimentation.

These are activities where students explore chemical reactions, as well as the effects of concentrated solutions.

The students will investigate how one liquid will change the color of another.

This activity is an extension to standard labs that have students generate a pH curve from strong acid/strong base data. Students are asked to predict and test how the the titration end point will shift when titrating vinegar (a weak acid) with NaOH (a strong base).

This activity is a classroom lab where students test common household liquids for pH level on the pH continuum, 1-14. They compare and contrast everyday use of the liquids, and how this relates to the liquids' pH property.

A short activity using goldenrod copy paper as an indicator to introduce neutralization reactions. Students describe what they beleive happens during this reaction.

Students choose shell fragments from different species of Molluscs and calculate percent lose after soaking in different ph solutions for different periods of time. They research ocean acidification and especially local events off the Oregon coast to apply to this activity.

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This activity is designed to be used as a jigsaw. Although each component could be individually used as desired. The activity is meant to be conducted in a three-phase approach.

Phase 1 involves small groups of "experts" focusing on one of our narrow topics related to ocean acidification. Students work together, using the Internet as necessary, to complete a short 10-15 minute activity while the instructor roams the room to clarify issues that arise.

Phase 2 involves small groups made up of one "expert" from each of the expert groups. This interdisciplinary group will work through a short 10-15 minute activity that encompasses the knowledge from each of the "experts" while the instructor roams the room to clarify issues that arise.

Phase 3 involves the entire class as a whole and to discuss and reflect upon the findings from each interdisciplinary group. The instructor leads this discussion.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

This activity is a field investigation of puddles where students gather data and record their findings.