Aplicação de pigmentos de flores no ensino de química

Please use this identifier to cite or link to this item: http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/4268

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DC Field	Value	Language
dc.creator	Couto Andréa Boldarini	-
dc.creator	Ramos Luíz Antonio	-
dc.creator	Cavalheiro Éder Tadeu Gomes	-
dc.date	1998	-
dc.date.accessioned	2013-05-30T10:54:41Z	-
dc.date.available	2013-05-30T10:54:41Z	-
dc.date.issued	2013-05-30	-
dc.identifier	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200020	-
dc.identifier	http://www.doaj.org/doaj?func=openurl&genre=article&issn=01004042&date=1998&volume=21&issue=2&spage=221	-
dc.identifier.uri	http://koha.mediu.edu.my:8181/jspui/handle/123456789/4268	-
dc.description	In the present work, the pH dependent colour change of the crude flower extracts is suggested as subject in teaching chemical or acid-base equilibria, visual indicators and some aspects of spectrophotometric concepts and applications. The vegetal species used are commonly found in Brazil, and the extraction methodology proposed is inexpensive and easy to perform in secondary schools and in general chemistry or instrumental undergraduate courses. A bibliographic review about the use of vegetal extracts in chemical education and a discussion of the flower colour are also presented.	-
dc.publisher	Sociedade Brasileira de Química	-
dc.source	Química Nova	-
dc.subject	colour change of crude flower extract	-
dc.subject	acid-base equilibrium	-
dc.subject	spectrophotometry	-
dc.title	Aplicação de pigmentos de flores no ensino de química	-
Appears in Collections:	Chemistry

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