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Elephant's toothpaste is a foamy substance caused by the quick decomposition of hydrogen peroxide (H 2 O 2) using potassium iodide (KI) or yeast and warm water as a catalyst. [1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide.
The Copernicus Science Centre also organizes Family Workshops, where children (5–8 years old) together with their parents or carers can carry out experiments to help them better understand everyday phenomena (e.g. where the current in electrical outlets comes from, how a TV works, or why does yeast make dough rise). The children can easily ...
The Bell System Science Series consists of nine television specials made for the AT&T Corporation that were originally broadcast in color between 1956 and 1964. Marcel LaFollette has described them as "specials that combined clever story lines, sophisticated animation, veteran character actors, films of natural phenomena, interviews with ...
In a second experiment, Pasteur used the same flasks and sugar-yeast mixture, but left it idle in 'swan-neck' flasks instead of introducing any extraneous matter. Some flasks were kept open to the common air as the control group, and these exhibited mold and microbial growths within a day or two.
Science Max: Experiments at Large is a Canadian children's television series, which premiered on TVOntario's TVOKids and Da Vinci Kids programming block in 2015. [1] Hosted by Phil McCordic , the series educates viewers about science through large-scale experiments to demonstrate scientific principles.
The experiment for which Buchner won the Nobel Prize consisted of producing a cell-free extract of yeast cells and showing that this "press juice" could ferment sugar. This dealt yet another blow to vitalism by showing that the presence of living yeast cells was not needed for fermentation. [ 9 ]
The experiment is practised in schools around the world and is often used at open evenings to show the more engaging and entertaining aspects of science in secondary education settings. [2] [3] The experiment shows the amount of energy there is in a piece of candy. Jelly babies [4] or gummy bears [5] are often used for theatrics.
Second, ethanol has bactericidal activity by causing damage to the cell membrane and protein denaturing, allowing yeast fungus to outcompete environmental bacteria for resources. [6] Third, partial fermentation may be a defense mechanism against environmental competitors depleting all oxygen faster than the yeast's regulatory systems could ...
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