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Dünnschichtchromatographie
Chromatografische Verfahren sind physikalische / chemische Trenntechniken von Stoffen.
Learn moreLerneinheit Chemie 8 – Kalk
In unserem Arbeitsheft „Lerneinheit Chemie 8 – Kalk“ finden Sie 10 interaktive und didaktisch aufbereitete Aufgaben zum Thema Kalk.
Solutions, Emulsions and Mixtures of Substances
Be it milk in a cereal bowl, tea in a glass or the air around us. We constantly come across mixtures of substances in our everyday lives. As the name suggests, they are mixtures – mixtures of several so-called pure substances.
Learn moreNoble Gases
Xenon, Helium, Neon, Argon, Krypton and the radioactive Radon belong to the noble gases. These form the family of noble gases as the elements of the eighth group of the periodic table. All of them are colourless and odourless, non-inflammable and non-toxic. Their most striking chemical property is their inertness. This can be explained by their electron arrangement, termed noble gas configuration and represents a particularly stable and therefore low-energy state. The noble gases are to be found in scant amounts in our air from which they are also distilled. Helium is mainly extracted from natural gas. In everyday life, we encounter noble gases for example as shielding, filling or buoyant gases and in fluorescent tubes. The shell model describes the structure of the atoms. It is based on the distribution of electrons in restricted areas at a fixed distance around the core of the atom.
Learn morePeriodic Table
With the help of the periodic system chemists can predict properties of chemical elements and derive chemical reactions. But you need not be a chemist to understand the periodic system.
Learn moreFascination Lime
Many products used in everyday life are impossible without lime. These are, among others, glass, sugar, paper as well as pharmaceutical and cosmetic products. The raw material is also indispensable in the construction materials industry. Iron and steel producers need limestone, in environmental protection it is used, for example, for air cleaning and drinking water purification.
Learn moreMaterials and Substances of Everyday Life
Hearing these words, you first think of the materials our clothing is made of. But all objects surrounding us in everyday life consist of one or several materials.
Learn moreFuel Cell
A smartphone offers a lot of opportunities nowadays. The numerous apps and applications may enrich your daily life but cost a lot of electricity. It is particularly annoying when the device fails at the most inconvenient moments. Conventional rechargeable batteries are often empty after one day already, and the device needs to be plugged in. Besides many others, also this problem could be solved by using fuel cells – thus considerably increasing the duration of the smartphone.
Learn moreDüngemittel
Pflanzen benötigen für ihr Wachstum, Licht, Wasser und Nährstoffe. Den Ausgleich für nicht vorhandene Nährstoffe schaffen Düngemittel. Doch welche Düngemittel gibt es? Welcher Dünger eignet sich für welchen Boden? Welche Konsequenzen bringt die Düngung mit sich?
Learn moreFire and Flame
Fire – one of the most important human discoveries. It gives us warmth and light, conveys security and fascinates us with its dancing flames.
Learn moreChemische Bindungen
Chemische Bindungen sind ein zentrales Element der Chemie. Unter der Bezeichnung „Chemische Bindung“ versteht man im Allgemeinen den Zusammenhalt der kleinsten Teilchen in chemischen Stoffen. Wenn also zwei oder mehrere Atome oder Ionen stark miteinander verbunden sind, liegt eine Chemische Bindung vor.
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