helium
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helium
A chemical element with the symbol He that is a very light, non-flammable, and inert gas. It is often used to fill balloons or in cooling technology.
Die Ballons stiegen in die Luft, weil sie mit Helium gefüllt waren.
The balloons rose into the air because they were filled with helium.
As the name of a substance, 'Helium' (helium) is generally used in the singular because it is an uncountable substance. A plural form is very unusual in everyday language.
Das Luftschiff ist mit Helium gefüllt und nicht mit Wasserstoff.
The airship is filled with helium and not with hydrogen.
In everyday language, 'Helium' (helium) is often combined with the verb 'füllen' (to fill) or the preposition 'mit' (with), especially when talking about balloons or airships.
Zum Geburtstag meiner Tochter haben wir viele bunte Ballons mit Helium.
For my daughter's birthday, we have lots of colorful balloons with helium.
The name 'Helium' (helium) comes from the Ancient Greek word 'Helios' for 'Sonne' (sun). The element was first discovered through the analysis of sunlight before it was detected on Earth.
Die Entdeckung von Helium auf der Sonne war ein Meilenstein für die Astronomie.
The discovery of helium on the sun was a milestone for astronomy.
hydrogen
'der Wasserstoff' (hydrogen) and 'das Helium' (helium) are both very light gases and chemical elements. That is why they can easily be confused. The important difference is: Wasserstoff has the symbol H and can burn. Helium has the symbol He, does not burn, and hardly reacts with other substances. Today, helium is often used for balloons because it is safer. Wasserstoff is more important when talking about energy, chemistry, or fuel.
Für die Geburtstagsballons kauft Maria Helium, weil das Gas nicht brennbar ist.
Maria buys helium for the birthday balloons because the gas is not flammable.
Wasserstoff kann als Brennstoff genutzt werden, wenn man daraus Energie gewinnen will.
Hydrogen can be used as a fuel when you want to produce energy from it.