The chemical name for water is H2O, meaning its compound consists of two hydrogen atoms and one oxygen atom. Hydrogen and oxygen are both non-metal elements that commonly exist as molecules of H2 and O2, respectively. Oxygen is necessary for life on Earth, as living things require oxygen and the world would not exist without it. The formula for the reaction that combines hydrogen and oxygen to form water molecules is 2H2 + O2 → 2H2O.

2. The chemical name of water
is H2O. It means that in the
compound of water consists
of two atoms of hydrogen
and one atom of oxygen.

3. Hydrogen is an element and it is
non-metal. It is precisely common
element what means that in
nature there isn’t just one atom
of hydrogen, there are always
two atoms which can be written
as: H2. H2 is a molecule.

4. Oxygen is the most popular element and it is
non-metal. And it is common element too,
so we can write it as: O2. And O2 is
molecule. Oxygen is necessary for us,
because we can’t live without breathing.
Without oxygen our world wouldn’t exist.

5. 2H2 + O2 ------> 2H2O

6. Thanks for watching our presentation
GROUP 2
Patrycja Orman- Poland
Wiktoria Waniak – Poland
Zuzanna Pruchniak -Poland
Gloria Fernández Barbusano - Spain
Alba García Gómez - Spain
Eduardo González Anelo - Spain
Abraham González Guisado - Spain
Janet González Rodríguez - Spain
Adriana Mañero Santana - Spain
Pascal - Germany