Final answer:
The cohesiveness of water molecules is most related to hydrogen bonds, which are responsible for many of water's properties. A base binds up excess hydrogen ions in a solution. A single carbon atom can bond with a maximum of four other atoms or molecules.
Step-by-step explanation:
The cohesiveness of water molecules is primarily due to hydrogen bonds formed between the slightly positive hydrogen atoms of one water molecule and the slightly negative oxygen atoms of another water molecule.
These intermolecular forces are significant in maintaining the liquid's structure and are responsible for many of water's unique properties, such as high surface tension and the ability to exist as a vast network of molecules.
In a solution, a base is the kind of molecule that binds up excess hydrogen ions. This is opposed to an acid, which donates hydrogen ions.
The maximum number of atoms or molecules a single carbon atom can bond with is four, as in the case of methane (CH4) where one carbon atom bonds with four hydrogen atoms.