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Students measure and compare the amount of carbon dioxide in different solutions using NaOH and phenolphthalein. The procedure is completely described and students use the scientific method as they carry out the experiment. The materials, procedure and result table are included and can be incorporated into a lab notebook. There is room provided for students to write a short conclusion to the experiment.
A simple graph can be constructed from the results; graph paper is provided. Suggestions for extension activities and ordering information for some of the materials and supplies are offered. A grading rubric for a full laboratory write up is also included.