Sistema de Entrenamiento y Experimentación para Estudiantes TESS

 
Utilice las fichas para mostrar el tipo de producto (Experimentos, Sets, Productos o Lit./Softw.).
 

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LLama de una vela

Principle

This student experiment is investigating how and why a candle burns. This experiment explains clearly which processes occur during burning a candle. Many students know that wax is a relatively soft and malleable material (often consists of stearin or paraffin). But perhaps they ...

 
Detalles

Num.Producto: P7154200

La oxidación- "combustión lenta"

Principle

Many students combine the term "oxidation" with a combustion reaction. This student experiment explains that oxidation also proceed "unspectacular" over longer periods. This experiment shows iron wool corrodes in moist air, it rusts. Rusting is "slow ...

 
Detalles

Num.Producto: P7154300

Reducción del óxido de cobre

Principle

In this experiment the reduction of copper oxide to copper is examined (reduction as an inverse process of oxidation). Students know that many oxides (caused by a thermal reaction of atmospheric oxygen with an element) can not be decomposed thermally in a simple manner to the pure ...

 
Detalles

Num.Producto: P7154400

Contenido en agua de una sustancia natural

Principle

Water is essential for human and animal and be taken in liquid form or be absorbed by food. Almost all foods contain water, the water content in natural products is high, especially in some fruits and vegetables in a very high proportion. In this experiment students investigate the ...

 
Detalles

Num.Producto: P7154500

Componentes disueltos en diferentes tipos de agua

Principle

Water is the basis of life for humans and animals. Naturally occurring water is not a pure substance and contains dissolved solids that remain on evaporation. But water contains not only dissolved solids it contains also gaseous components such as dissolved carbon dioxide. In ...

 
Detalles

Num.Producto: P7154600

Solubilidad de gases en agua

Principle

Different substances mix in different proportion with each ofter. Finely divided solids witch each ofter and gases can be mixed with each other in any proportion. Gases and liquids are not miscible in any proportion. Most gases dissolve in water, usually relatively ...

 
Detalles

Num.Producto: P7154700

Soluciones, coloides suspensiones

Principle

Mixtures of solids and water form in physically different ways. Depending of the degree of dispersion one can differentiate between solutions, colloids and suspensions.

Tasks

Mix several substances in water and investigate the resulting types of ...

 
Detalles

Num.Producto: P7154800

Solubilidad de sales en agua: comparación de la solubilidad de gases en agua

Principle

In contrast to gases, the higher the temperature of the water, the better salts dissolve in it. By supercooling them, metastabile supersaturated solutions can be prepared which exhibit a higher concentration than that corresponding to the thermodynamic equilibrium quantity at a ...

 
Detalles

Num.Producto: P7154900

Modo de aireación en un tanque (planta de tratamiento de aguas residuales)

Principle

A sewage treatment plant converts dirty waste water by mechanical and chemical-biological processes in clean water. One of these purification steps in sewage treatment plants is the aeration in the aeration basin. During this step oxidizable substances are oxidized by air and ...

 
Detalles

Num.Producto: P7155000

Tratamiento de agua en plantas de tratamiento de aguas residuales

Principle

A sewage treatment plant converts dirty waste water by mechanical and chemical-biological processes in clean water. One of these purification steps are the gravel / sand filters. In sewage treatment plants for water treatment a combined system of gravel / sand filters ...

 
Detalles

Num.Producto: P7155100

Dureza del agua

Principle

Under hardness of water is understood the amount of dissolved salts (calcium salts and magnesium salts). The higher the amount of dissolved salts the "harder" the water. This can also be applied to drinking water,  drinking water can be devided in accordance with the ...

 
Detalles

Num.Producto: P7155200

Dureza del agua

Principle

Drinking water can be classified according to the fraction of (above all) calcium and magnesium salts into hard and soft water. On heating, lime (calcareous fur) precipitates out of hard water. Calcium soap is redissolved by water softening agents.

Benefits

  • Experiment ...
 
Detalles

Num.Producto: P7155201

Test para agua

Principle

There are substances that change color on contact with water and can be used as a detection reagent for water. The property of these materials is based on that these salts contain crystallization water and (by heating) this water is removed. This removement of water leads to a ...

 
Detalles

Num.Producto: P7155300

Agua, un óxido

Principle

Water plays an important role in everyday life and also in science classes. The question  whether water is an element, pure substance or compound can be answered experimentally that when substances containing hydrogen are burned, water is formed. That is why water is an ...

 
Detalles

Num.Producto: P7155400

Degradación del agua por reducción de agentes

Principle

With an reducing agent compounds can be converted into the corresponding pure substances. In this experiment the reduction process is investigated by the reduction of water. Water can reduced to oxygen and hydrogen by reducing agents (metals and high ...

 
Detalles

Num.Producto: P7155500

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