Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
- Autores
- Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; Ciolino, Andrés Eduardo
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.
Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina - Materia
-
Hands-On Learning/Manipulatives
High School/Introductory Chemistry
Laboratory Instruction
Quantitative Analysis - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/43230
Ver los metadatos del registro completo
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Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"Hernando, FrancoLaperuta, SantiagoKuijl, Jeanine VanLaurin, NihuelSacks, FedericoCiolino, Andrés EduardoHands-On Learning/ManipulativesHigh School/Introductory ChemistryLaboratory InstructionQuantitative Analysishttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaAmerican Chemical Society2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43230Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-9100021-9584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.7b00040info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.7b00040info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:57Zoai:ri.conicet.gov.ar:11336/43230instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:36:57.492CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
title |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
spellingShingle |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" Hernando, Franco Hands-On Learning/Manipulatives High School/Introductory Chemistry Laboratory Instruction Quantitative Analysis |
title_short |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
title_full |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
title_fullStr |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
title_full_unstemmed |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
title_sort |
Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste" |
dc.creator.none.fl_str_mv |
Hernando, Franco Laperuta, Santiago Kuijl, Jeanine Van Laurin, Nihuel Sacks, Federico Ciolino, Andrés Eduardo |
author |
Hernando, Franco |
author_facet |
Hernando, Franco Laperuta, Santiago Kuijl, Jeanine Van Laurin, Nihuel Sacks, Federico Ciolino, Andrés Eduardo |
author_role |
author |
author2 |
Laperuta, Santiago Kuijl, Jeanine Van Laurin, Nihuel Sacks, Federico Ciolino, Andrés Eduardo |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Hands-On Learning/Manipulatives High School/Introductory Chemistry Laboratory Instruction Quantitative Analysis |
topic |
Hands-On Learning/Manipulatives High School/Introductory Chemistry Laboratory Instruction Quantitative Analysis |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature. Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina Fil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina Fil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina Fil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina Fil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina Fil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina |
description |
In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/43230 Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-910 0021-9584 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/43230 |
identifier_str_mv |
Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-910 0021-9584 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.7b00040 info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.7b00040 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613162636148736 |
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13.070432 |