tag:blogger.com,1999:blog-21308831.post7377096518612087170..comments2023-06-26T08:05:27.290-07:00Comments on An Italian in the US: Nano-daychemcookithttp://www.blogger.com/profile/17675842171888658314noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-21308831.post-82358214533497046222007-11-06T21:32:00.000-08:002007-11-06T21:32:00.000-08:00Jai - very good, yeah, it is a colloidal suspensio...Jai - very good, yeah, it is a colloidal suspension, and the color does depend on particle size. In fact, we had the kids play a trick on them: if you add salt (just whatever salt, such as the one we add on food), it neutralizes their surface charges, and they stick together, thus making bigger particles and changing color. Kind of cool!chemcookithttps://www.blogger.com/profile/17675842171888658314noreply@blogger.comtag:blogger.com,1999:blog-21308831.post-44586679922029002162007-11-06T21:00:00.000-08:002007-11-06T21:00:00.000-08:00presume it is a colloidal suspension. does the co...presume it is a colloidal suspension. does the color depend on the medium of suspension or dispersion (particle size dependent)? or some other reason. hmm...am curious! --jaibeehttps://www.blogger.com/profile/18128812845273224940noreply@blogger.com