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VIRI Lajewski, C.K., Mullins, H.T., Patterson W.P. and C.W. Callinan, (2002). Historic calcite record from the Finger Lakes, New York: Impact of acid rain on a buffered terrane. Geological Society of America Bulletin, March, 2003, v. 115, no. 3, p. 373–384. Pridobljeno s (2016): http://gsabulletin.gsapubs.org/content/115/3/373.abstract Dombrink, K., (2009). A video of the Buffering of Lakes activity. Buffers and in Environmental Chemistry. Part ofthe Flinn Scientific—Teaching Chemistry eLearning Video Series. Pridobljeno s (2016): http://www.flinnsci.com/teacher-resources/teacher-resource-videos/best-practices-for teaching-chemistry/acids-and-bases/buffering-of-lakes/ Dombrink, K., (2009). Buffering of Lakes. Buffers and in Environmental Chemistry. Flinn Scientific, Inc. Publication No. 91314. Pridobljeno s (2016): http://www.flinnsci.com/media/620765/91314.pdf Warner, I., (2003). Natural Buffers in Lakes. Student Activity. Buffering Capacity of Lakes, Spellbound Project – Isiah Warner. Pridobljeno s (2016): https://www.acs.org/content/dam/acsorg/pressroom/podcasts/natural buffers-in-lakes-activity.pdf Graunar, M., Podlipnik, M., Mirnik, J. (2016). Kisline, baze in soli. Kisli dež. V M. Graunar (ur.), V. Kožuh (ur.), Kemija danes 2, Učbenik za kemijo v 9. razredu osnovne šole (str. 18–19). Ljubljana: DZS Dolenc, D., Graunar, M., Modec, B.(2014). Kisline, baze in soli. Kako pridobivajo žveplovo kislino. V M. Graunar (ur.), V. Kožuh (ur.), Kemija danes 2, Delovni zvezek (str. 6). Ljubljana: DZS Klopčič, M., Banovič, L., V. Stefanovik (2014). CO 2 in morje; dobra in slaba novica, V M. Orel (ur.), Kemijski poskusi Mehurčki (22–26). Ljubljana: Gimnazija Moste. SLIKE Slika 1 Prirejeno po (2016): »Historic calcite record from the Finger Lakes« http://gsabulletin. gsapubs.org/content/115/3/373/F14.large.jpg Slika 2 Potrebščine – snovi, V. Stefanovik Slika 3 Prirejeno po (2016): »Buffering of Lakes«: http:// www.flinnsci.com/media/620765/91314.pdf Slika 4 Priprava reagentov, V. Stefanovik Slika 5 Pia in Mana in naravni pufer, V. Stefanovik Slika 6 Dokaz CO 2 , V. Stefanovik

Slika 7 Dodajanje »Kislega dežja« pufru, V. Stefanovik Slika 8 pH jezera na karbonatnih tleh, V. Stefanovik Slika 9 pH jezera na prodnato-peščenih tleh, V. Stefanovik Slika 10Pia in Mana pred izvedbo poskusa, V. Stefanovik Slika 12 Priprava na delo, V. Stefanovik * 5-minutni film, objavljen na: https://youtu.be/C9Q6QJdWGyU * 3-miutni film, objavljen na: https://youtu.be/0R8uesLRpuo

Pia Bratož, Mana Veljkovič-Hirsch Mentorica: Violeta Stefanovik Osnovna šola Franceta Bevka, Ljubljana

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