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Principle
Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanic or similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlled by these enzymes may ...
In the case of simple electrolysis (for example electrolysis of water) an electrolysis cell consists of two identical electrodes (mostly graphite or platinum), which are immersed in an (electrolyte) solution. In this experiment sodium hydroxide solution is used as an electrolyte ...
In this experiment students examine the reaction of metals in salt solutions. Students put iron or iron wool into a copper sulfate solution and solid copper into an iron sulfate solution. With this experiment students learn that metals can be deposited from a salt ...
Especially understandable and didactic prepared experiment descriptions including protocol
Future-proof lessons: Integration of tablets in digital science lessons
Enhanced motivation of students due to the use of the intuitive measureAPP
Increase of media ...
The separation of liquid mixtures can be achieved by a simple distillation. In this experiment a liquid mixture of water and ethanol is distilled by using a distillation column. Various fractions of the distillate are obtained with the help of a rotatable receiver. The ...
El cobre se calienta en un volumen de aire definido y la superficie se oxida y produce óxido de cobre (II). El volumen del aire se reduce por la reacción de la cantidad de oxígeno contenido en el aire: sólo cerca de un quinto del aire mezclado con el gas reacciona ...
This experiment shows that the combustion rate depends on the degree of dispersion and the mixing with oxygen (or the oxidizing agent). Students observe that metals such as aluminum and magnesium are non-flammable in compact form or when they burn , they burn ...
The experiment examine the terms enthalpy and entropy as the main forces of chemical reactions. Students perform the reaction of zinc and hydrochloric acid as an example of an exothermic reaction. The heat, which is developed by the raction, is measured with a thermometer. The ...
This experiment shows that exothermic reactions start not always spontaneous when two (or more) substances are mixed together. Students realize that no reaction occurs when the reactants (in solid state) are mixed together. The solids usually begin to react with each ...
This experiment introduces alkaline earth metals with calcium and magnesium as representatives. Magnesium and calcium both show high chemical reactivity. The experiment also shows the reaction of the latter with water and respective hydroxide formation.
Benefits
PHYWE presenta la nueva unidad de rayos X: tecnología innovadora, máxima seguridad y comodidad.
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