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Exothermic chemical reactions give off more energy than they themselves need for their process. The film explains combustion, which is the most important exothermic reaction - we use it to produce heat for example. It is the most commonly used chemical reaction, and it is also the oldest one known to mankind.

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Endothermic reactions consume more energy than they release, whereas the opposite is true for exothermic reactions. Therefore, there are many applications for the latter. The film presents various forms of exothermic reaction and shows how, for example, combustion, thermite reactions and explosions can be used beneficially.

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Electroplating, colloquially known as galvanising, is the electrochemical deposition of metal layers on so-called substrates - for example, coating a piece of metal with a usually very thin layer of a more noble metal. The process is named after the man who discovered it, the Italian doctor Luigi Galvani.

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Zuerst zeigt der Film Aufbau und Arbeitsweise des menschlichen Auges. Im zweiten Teil geht es um Licht und andere elektromagnetische Strahlung. Der dritte Teil folgt den Entdeckungen, die Isaac Newton mit einem Prisma machte. Experimente verdeutlichen interessante Eigenschaften des Lichts.

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This film is about the technical limestone cycle. Limestone is mined and processed industrially. Carbon dioxide bound in limestone is dissolved and forms calcium oxide. When water is added, calcium carbonate forms in an exothermal reaction. It reacts with carbon dioxide in the air, forming calcium carbonate again.

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The film gives an overview of the material properties of thermal and electrical conductivity. Examples and experiments are used to explain how well heat and electricity are passed on through various solid and liquid substances. In this context, the video explains the concept of electrical resistance.

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A redox reaction happens when oxidation and reduction take place simultaneously. Redox reactions are necessary to extract metals like iron or copper. This video explains what oxidizing agents and reducing agents are, why some metals don´t easily react with oxygen, and uses experiments to demonstrate redox reactions.

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Die Oberfläche der Erde ist zu rund zwei Dritteln von Wasser bedeckt. Kein anderer Stoff kommt natürlich auf der Erde flüssig, fest und gasförmig vor. In diesem Video geht es um die physikalischen Eigenschaften von flüssigem Wasser. Beleuchtet werden unter anderem die Kohäsion, sowie der Siedepunkt und der Gefrierpunkt von Wasser.

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Wasser ist der einzige Stoff, der auf der Erde natürlich in allen drei Aggregatzuständen vorkommt: flüssig, fest und gasförmig. In diesem Video geht es um die physikalischen Eigenschaften von festem Wasser - also Eis. Unter anderem geht es um die Dichteanomalie, Druckaufschmelzung und Kristallisationskerne.

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Due to its properties, the element zinc is an important working metal and in combination with other metals plays an important in metalworking. The film presents zinc´s properties and how it reacts with acids and bases. It also looks into the role of zinc in electrochemistry and in the human body´s metabolic processes.

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Topic of this film is the reaction of water with different substance groups, acidic and alkaline solutions. Substances that give off protons when they react with water are called acids, and substances that take up protons in a reaction with water are called bases. Gaseous acids and bases are often extremely soluble in water.

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A water molecule, one of the most important solvents, is made up of two hydrogen and one oxygen atom. Due to the position of the atoms, the electrical charge in the molecule is asymmetrical. The hydrogen molecule has an electrical plus and negative pole. The film shows what water´s property as a solvent is all about.

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Titration is used for the exact measurement of amounts and is a part of quantitative analytical chemistry. The most important instrument in titration is the burette, a glass tube with a scale. With its help, the concentration of a sample solution can be determined by adding a precise amount of a known standard solution.

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For a long time, it was considered certain that organic substances could not be produced from inorganic ones. The mixture of potassium cyanate and ammonium sulphate, which produces organic urea, disproved this thesis. The film shows the experiment including the proof and explains the many uses of urea.

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Sulfur was already used 5000 years before Christ to bleach textiles and as a disinfectant. As one of the most reactive elements, sulfur consists of atoms arranged in a ring. The video introduces the different forms of sulfur and shows in several experiments how it behaves and reacts with other elements.

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There are different groups of substances to which substances are assigned according to their characteristic properties. The film shows what these properties are, namely the state of aggregation, the melting or boiling temperature, metallic sheen, hardness, density, solubility and finally conductivity.

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We encounter sodium in various forms in many places in everyday life, including the kitchen. The film introduces sodium and sodium hydroxide, points out their differences, and demonstrates their material properties by means of experiments. The very different uses of the reactive element are also shown.

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The simplest compounds in organic chemistry are the hydrocarbons. The film introduces the first alkanes (saturated hydrocarbons) and alkenes (unsaturated hydrocarbons) and explains their differences and properties. The substances can occur in many variants, which have correspondingly different properties.

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Silver is considered to be the second most precious metal after gold. Silver is a brilliant white precious metal and with a density of 10.4 g/cm³, it is one of the heavy metals. Of all metals, it is the most reflective and absorbent of light. The film presents the properties of silver and how it reacts with other substances.

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This film is about the separation methods that can be used to split mixtures into their different components. It explains the separation methods decantation, sedimentation, sink-float separation, centrifugation, picking, filtration, evaporation, distillation, adsorption, extraction, chromatography, and combinations thereof.

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Metals that quickly release electrons, electron donors, are called non-precious. Electron acceptors, i.e., metals that release only very few or no electrons at all, are precious. Metals can be put into an order, the electrochemical series, according to the readiness with which they release electrons.

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To find out whether a liquid is acidic or alkaline, indicators are used to measure pH levels. The pH scale ranges from 0 (extremely acidic) to 14 (extremely alkaline). Pure water sits in the middle of the scale with a pH of 7. Using various experiments, this film shows how to measure the pH levels of aqueous solutions.

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Synthetic fibers are made from petroleum and natural gas. This video takes a look at organic and synthetic molecule chains as well as thermoplastic and duroplastic materials, explains the difference between monomers and polymers and gives a brief overview over the history of synthetic fibers like Nylon.

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Imagining modern life without plastics is almost impossible. We use them in construction, as food packaging, paints, or clothing. Polymerization is the reaction used in their manufacture. This video takes a closer look at how monomers are combined to form polymers and gives a brief overview over the history of plastics.

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Petroleum is one of the most important raw materials. We have been using it for almost 200 years - intensively so for 100. Most of it is used for heating and other energy needs. But petroleum is also indispensable in the production of drugs and other products. Because it is a finite resource, it gets less and less.

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The particle model helps us get an idea of the structure and properties of substances. Sugar, for instance, can appear as rock candy, granulated sugar or icing, and can even be fully dissolved in water - all without a change to its particles. This film visualizes the particle model using different experiments.

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It is the most abundant element on Earth and almost all living beings need it - oxygen. Under normal conditions, it is a colourless and odourless gas, occurring as a two-atom molecule. This video explains oxygen´s properties, shows its position in the periodic table, and demonstrates its high reactivity in several experiments.

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Oxidation is a chemical reaction. It runs when a candle is burning or a rocket is launched. An old rusted iron fence is actually the result of oxidation. And oxidation reactions even take place in our bodies. In this video, the characteristics of chemical reactions are explained and illustrated through different examples.

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Each element has a name. The subject of this film is how the naming is done. The names consist of the names of the elements in combination with a multiplication affix and a suffix. This film explains the nomenclature (i.e., the naming system) of inorganic compounds in an entertaining and step-by-step manner.

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Nitrogen from the Earth´s atmosphere is converted by bacteria and then processed by plants. Humans and animals ingest these nitrogen compounds in their food. The nitrogen is returned to the soil in animal excrement that contains urea and in rotting plants. This film shows the nitrogen cycle and the Haber-Bosch process.

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