Solutions, Emulsions and Mixtures of Substances
46500921 / 55500677
Solutions, Emulsions and Mixtures of Substances
Properties and Uses
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. They are, for instance, the chemical elements listed in the periodic table. These are substances that only consist of one single element, for example sulphur. But there are also pure chemical compounds such as distilled water or sodium. If you solve sodium or other substances in regular water, the result is a mixture of substances. A mixture is formed from different chemical compounds. With mixtures of substances like this, the source substances remain in the mixture as individual units – even if you cannot distinguish them with the naked eye. Nevertheless, they can be divided into their individual components with the help of various separation methods.
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Curriculum-centred and oriented towards educational standards
Matching
Internet Addiction
The film consists of two parts. The first part is the 15-minute short film “In the Net”. It describes the problem of excessive Internet use in a humorous way, in particular the risk of losing touch with reality when chatting. The second part illustrates with three real persons how Internet addiction can develop and the problems encountered by those who are afflicted. The authentic statements are commented by an experienced therapist. For many pupils, the issues addressed here are related to their everyday lives. What is a “sensible” use of the Internet, where does pathological addiction start? In contrast to addiction to alcohol, nicotine or drugs, the public seems to be largely ignorant of the problem of this addiction, which is not related to any substance abuse. The film provides material for discussion in the classroom (crossdisciplinary) and can be used as a basis for the formulation of prevention strategies.
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Resuscitation
It can happen to anyone – of any age, in any place, at any time. Sudden cardiac arrest may quickly prove fatal. Immediate action is called for! Just remember: Check Call Press Anyone can do it. You can't do anything wrong!