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Inhaltlich verantwortlich: Birgit Kersten
Eingestellt am: 30.06.2022
Stand vom: 02.01.2023

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Birgit Kersten auf dem Bildungsserver Sachsen-Anhalt (http://www.bildung-lsa.de/index.php?KAT_ID=13532#art41305)
Open Educational Resources

Beitrag eingestellt von: Frau Birgit Kersten
Telefon: +49 (0)345 2042 254
E-Mail: birgit.kersten@bildung-lsa.de

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1248 Datensätze auf 125 Seiten
VIDEO
Density depending on temperature
 (0 Min ) 
Chart: Density-temperature structure of water compared with benzol; comparison shows the density anomaly of water. Most substances have a continuous trend: the higher the temperature, the lower its density. In phase transitions (gas –> liquid –> solid) the den...
VIDEO
Water molecule
 (0 Min ) 
Graphic: Presentation of a water molecule as ball model. Graphical presentation of a water molecule: The red oxygen atom is much larger than the two connected hydrogen atoms. The angle between the two hydrogen atoms is 104 degrees, the deviation from the ideal tetrahedr...
VIDEO
Geometry of hydrogen bridges in H2O
 (0 Min ) 
Graphic: Geometric positioning of water molecules during the forming of hydrogen bridge bonds. Shows the different possibilities for hydrogen bridge bonds in the water molecule. Information and ideas: Introduces students to the topic "chemical bonds, hydrogen bridge bon...
VIDEO
Dipole formation
 (0 Min ) 
Graphic: Tetrahedral structure of the water molecule and formation of the dipole moment. The strong electronegativity difference between oxygen and hydrogen leads to a shift of electrons in the bonds. There are negative and positive partial charges within the molecule, ...
VIDEO
Excitation energy of a water molecule
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Chart: Water can absorb heat energy in the form of vibrations or movement of its molecules. This energy content depends on the physical state: steam contains more energy than liquid water, for example. The material surrounding us takes on different physical states depen...
VIDEO
UV module (physical poSewage plant – UV module (physical post-treatment)st-treatment)
 (0 Min ) 
Photo: UV module for disinfecting water in a sewage plant (physical post-treatment). Information and ideas: Suitable as preparation for visiting a sewage plant as a learning location outside of school.Schlüsselworte: Sewage plant, Waste water, Sachkunde, Physik, Biolog...
VIDEO
Detection reaction for unsaturated fats (3)
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Photo: Addition of soluble starch to butter (on the right). The starch serves as an indicator of “free iodine” through the formation of a blue iodine/starch complex. Note: The test tube must be shaken before the detection result can be evaluated.Schlüsselworte: Che...
VIDEO
Detection reaction for unsaturated fats (5)
 (0 Min ) 
Photo: After the test tube containing the butter is shaken for about three minutes, a blue coloration appears, as can be seen in the photo.Schlüsselworte: Chemical compound, Chemical reaction, Fats, Chemie
VIDEO
Detection reaction for unsaturated fats (7)
 (0 Min ) 
Photo: Reaction products without blue coloration (olive oil) on the left and with blue coloration (butter and iodine/starch complex) on the right. Left: A lack of blue coloration means that an iodine/starch complex is not present. Therefore, the available iodine was tak...
VIDEO
Detection reaction for unsaturated fats (6)
 (0 Min ) 
Photo: After the test tube containing the olive oil is shaken for about three minutes, a blue coloration does not appear.Schlüsselworte: Chemical compound, Chemical reaction, Fats, Chemie
1248 Datensätze auf 125 Seiten