1. Hydrogen Ivo Indra, Vladimír Holoubek

2. General information The word “hydrogen“ – from Greek “water generator“ discovered in 1766 by Henry Cavendish The Element no.1 in universe, biogenic Forms weak bonds with electronegative elements

3. Isotopes 1 H – protium – no neutron, “light H“ 2 H – deuterium – 1 neutron, “heavy H“ 3 H – tritium – 2 neutrons, “super heavy H“

4. Appliance Reducing agent Welding – in mixture with oxygen Nuclear fusion – still in research, termonuclear bomb Power supply – future in energetics and transport Welding - svařování

5. Water The most common substance on Earth, but in rivers and lakes there is only less than 0,003% Thanks to hydrogen bonds it has annomal properties Tomatoes and cucumbers contain 98% water.

6. Compounds Water Ammonia Hydrides Acids Organic compounds Hydrogen peroxide

7. Hydrogen – future of transport Ecologic way of car gear In research because of strong reactivity 2 ways :hydrogen tank or small electrolyser in car Now still too dangerous and expensive Gear - pohon

8. Thank you for your attention