Water is made up of two elements, hydrogen and oxygen. These two elements share electrons to form a chemical bond between them. Think of sharing a toy with your friend, it's like that but with tiny particles called electrons.
The oxygen atom shares two electrons with two hydrogen atoms. This is called a covalent bond. It's like holding hands with your friend, but instead of hands, it's electrons. This bond creates a molecule of water.
The sharing of electrons creates a special electric charge on the atoms. The oxygen atom pulls the shared electrons towards itself, giving it a slightly negative charge. The hydrogen atoms, on the other hand, end up with slightly positive charges.
These opposite charges attract each other, which makes water molecules stick together. This is called hydrogen bonding. It's like how magnets stick together but with electrons.
So, in summary, water molecules are formed by a covalent bond between hydrogen and oxygen atoms. The sharing of electrons creates a special electric charge that makes the molecules stick together through hydrogen bonding.