There are three types of chemical bonds: Ionic, Covalent and Metallic.
Ionic: occurs when one atom gains a valence electron from a different atom, forming a negative ion (ANION) and a positive ion (CATION), respectively. These oppositely charged ions are attracted to each other, forming an ionic bond. Characteristics they have are high melting points,have Conduct electricity,dissolve easily in water, have well-defined crystals.
Covalent: results when two atoms "share" valence electrons between them. For example, the directional characteristic of covalent bonds can produce a weak negative charge where the electron clouds overlap with a corresponding weak positive charge opposite the area of overlap.
Metallic: Metallic bonding is the electromagnetic interaction between delocalized electrons, called conduction electrons and gathered in an "electron sea", and the metallic nuclei within metals. All metals share the characteristics of conducting heat and electricity and being ductile and malleable
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