Chemistry
4677273 / 5564509
Periodic Table
System of the Elements
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.
First of all the question arises: What is a chemical element?
Chemists of the past noted here: “A chemical element is a chemical substance that cannot be further broken down into other substances.“
All known substances are formed by these elements. At present (2017) we know 118 elements. The elements 113, 115, 117 and 118 were added most recently in 2016. They belong to the so far 27 elements which cannot be found in nature but are man-made. Many of the remaining 91 elements are found only in the form of chemical compounds in nature, not in their pure form.
- <> Languages : DE, EN
- <> Target Groups : Sek I
- <> Subject : Chemistry
- <> Length : 27:42 min
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Curriculum-centred and oriented towards educational standards
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Mobile Learning II
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Seal of approval
Quality seals such as the "Bio-Siegel", "Blauer Engel", "Stiftung Warentest" and up to 1,000 other seals represent characteristics such as sustainability, health or safety with regard to a product, a service or even a company.
Air Traffic
Being able to fly has been a dream of humanity from time immemorial. But it does not even date back a century that people actually started being able to travel through the air. Since the 1960s, the number of flight passengers has been constantly increasing. Thus, the airspace is no longer dominated by birds but by man-made flying objects.