hydrogen

idrogeno

L’elemento chimico più leggero, con simbolo H, presente nell’acqua e in molte altre sostanze.

In inglese semplice: The lightest chemical element, with the symbol H, found in water and many other substances.

• Hydrogen is the lightest element.
• Water contains hydrogen and oxygen.
• Scientists study hydrogen in distant stars.

Espressioni comuni: hydrogen in water, hydrogen content, hydrogen and oxygen, hydrogen isotope

idrogeno, idrogeno gassoso

Gas molto leggero, senza colore né odore, che brucia facilmente e ha formula H₂.

In inglese semplice: A very light gas with no color or smell that burns easily and has the formula H₂.

• The tank contains hydrogen.
• Hydrogen burns when mixed with oxygen.
• This rocket uses liquid hydrogen as fuel.

Sinonimi: hydrogen gas

Espressioni comuni: hydrogen gas, hydrogen fuel, liquid hydrogen, tank of hydrogen

atomo di idrogeno

Un singolo atomo dell’elemento chimico più leggero, il cui simbolo è H.

In inglese semplice: One atom of the lightest chemical element, whose symbol is H.

• This carbon has one hydrogen attached.
• The reaction replaces a hydrogen with chlorine.
• Both hydrogens are bonded to the same oxygen.

Sinonimi: hydrogen atom

Espressioni comuni: attached hydrogen, replace a hydrogen, hydrogen on carbon