Aplicação de pigmentos de flores no ensino de química

Detalhes bibliográficos
Autor(a) principal: Couto,Andréa Boldarini
Data de Publicação: 1998
Outros Autores: Ramos,Luíz Antonio, Cavalheiro,Éder Tadeu Gomes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200020
Resumo: 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.
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spelling Aplicação de pigmentos de flores no ensino de químicacolour change of crude flower extractacid-base equilibriumspectrophotometryIn 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.Sociedade Brasileira de Química1998-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200020Química Nova v.21 n.2 1998reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40421998000200020info:eu-repo/semantics/openAccessCouto,Andréa BoldariniRamos,Luíz AntonioCavalheiro,Éder Tadeu Gomespor2003-11-27T00:00:00Zoai:scielo:S0100-40421998000200020Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2003-11-27T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Aplicação de pigmentos de flores no ensino de química
title Aplicação de pigmentos de flores no ensino de química
spellingShingle Aplicação de pigmentos de flores no ensino de química
Couto,Andréa Boldarini
colour change of crude flower extract
acid-base equilibrium
spectrophotometry
title_short Aplicação de pigmentos de flores no ensino de química
title_full Aplicação de pigmentos de flores no ensino de química
title_fullStr Aplicação de pigmentos de flores no ensino de química
title_full_unstemmed Aplicação de pigmentos de flores no ensino de química
title_sort Aplicação de pigmentos de flores no ensino de química
author Couto,Andréa Boldarini
author_facet Couto,Andréa Boldarini
Ramos,Luíz Antonio
Cavalheiro,Éder Tadeu Gomes
author_role author
author2 Ramos,Luíz Antonio
Cavalheiro,Éder Tadeu Gomes
author2_role author
author
dc.contributor.author.fl_str_mv Couto,Andréa Boldarini
Ramos,Luíz Antonio
Cavalheiro,Éder Tadeu Gomes
dc.subject.por.fl_str_mv colour change of crude flower extract
acid-base equilibrium
spectrophotometry
topic colour change of crude flower extract
acid-base equilibrium
spectrophotometry
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.
publishDate 1998
dc.date.none.fl_str_mv 1998-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200020
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40421998000200020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.21 n.2 1998
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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