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Chameleon bubbles

Nicole

Type	Document
Description	Chameleon bubbles are alginate bubbles that emerge when a sodium alginate solution is dropped into a calcium chloride solution – just like how bubbles in bubble tea are made. The bubbles can change their colour with respect to the substance with which they are filled. In this case, the bubbles are filled by an acid-base indicator solution; so, adding acids or bases in the outer surrounding lea...
Tags	Sodium alginates acids bases indicators semipermeable membrane. chemistry
Author	TEMI group
Uploaded by	Nicole
License	Creative Commons Attribution-NonCommercial
Attribute to	http://teachingmysteries.eu/en/about/?t=1

Language	Language independent
Created at	May 24, 2016 10:34
Updated at	May 24, 2016 10:34
Size	1.45 MB

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• Type: Document
• Title: Chameleon bubbles
• Description: Chameleon bubbles are alginate bubbles that emerge when a sodium alginate solution is dropped into a calcium chloride solution – just like how bubbles in bubble tea are made. The bubbles can change their colour with respect to the substance with which they are filled. In this case, the bubbles are filled by an acid-base indicator solution; so, adding acids or bases in the outer surrounding leads to colour changes inside the bubbles by diffusion and pH change – just like how a chameleon can change its colour. Since acids and bases are colourless liquids, adding them to the solution around the bubbles leads to mysterious colour changes.
• Keywords: Sodium, alginates, acids, bases, indicators, semipermeable, membrane., chemistry
• Language: Language independent
• Age Range: 10 - 18
• Author: TEMI group
• Uploaded by: Nicole
• License: Creative Commons Attribution-NonCommercial
• LOM Metadata: http://vishub.org/activity_objects/27451/metadata.xml

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