Question

(4) How is water formed?
Ans.​

Answer 1

Answer:

You've probably heard of atoms, the tiniest building blocks of all matter in the Universe. We are all made of atoms stuck together (or, as scientists would say, “bonded”). Atoms bonded together form molecules. A molecule of pure water is made of two hydrogen atoms bonded to an oxygen atom.

Explanation:

In chemical reactions, atoms are rearranged and regrouped through the breaking and making of chemical bonds. For example, when hydrogen gas, H2(g), is burned in the presence of gaseous oxygen, O2(g), a new substance, liquid water, H2O(l ), forms.

Answer 2

Answer:

atoms bonded together form molecules.a molecule of pure water is made of two hydrogen atoms bonded to an oxygen atom.