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Chemistry

37 results

Fire 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.

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Fuel 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.

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Materials 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.

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Alkali Metals

What do lithium batteries, table salt and firework rockets have in common?

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Periodic 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.

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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.

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Plastic

Plastic has been around for not longer than roughly 100 years, and the synthetic material is a brilliant invention. Its production is cheap, it can take almost any possible form, it is light-weight, versatile and, above all, inexpensive.

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Halogens

The compounds of halogens are - with the exception of astatine - widespread, can be encountered in nature and are versatile substances. This fact is taken up on this DVD in order to teach the students the chemistry of the halogens by illustrating their special qualities and explaining the correlation of their structure with their chemical properties. In the first part, an overview of the element group of halogens lays emphasis on the common as well as on the distinguishing characteristics of fluorine, chlorine, bromine and iodine. In a second part, the specific properties of bromine and iodine are presented. This topic is linked to the students‘ everyday experience on the one hand (bromine as a catalyst for reactolite sunglasses, iodine as an agent in medicine, etc.) on the one hand. As a rule, they are of a kind that can only be realized with difficulty, or high expenditure in the chemistry classroom. With the help of these experiments, students are introduced to the chemistry of the halogens in a way that enables them to draw conclusions on the basis of their observations.

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