Vocabulary: » Term: » Records: » ID: 639

Click image to see larger image	Grapefruits
Location	http://commons.wikimedia.org/wiki/Image:Citrus_paradisi_%28Grapefruit%2C_pink%29.jpg
Observations	Pink grapefruits cut into sections.
Explanations	Baking soda can be used as an indicator of how much acid food contains. You can test grapefruit and orange juice, and you should find that grapefruits and oranges tested with baking soda produce some gas, but less gas when compared to testing lemon and lime juice.
California Standards	Organism survival
National Standards	Nutrition
Related NSF Exemplary Curriculum	Food and nutrition Human body systems Food chemistry Investigating human systems
Related Sets	Acid test
Creative Commons License	This work is licensed under a Creative Commons Attribution-Share Alike 2.5 License.
Authors	Bild von Aleph None None
Publisher	None May 01 2007
Other Copyright Comments	Image by א (Aleph), http://commons.wikimedia.org

This material is based upon work that was supported by the National Science Foundation under Grant No. 0127164 to California State University Fullerton. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.