Types of chemical bonds
Chemical bond: a mutual attraction between nuclei and valence electrons of two different atoms that bing them together (3 major types: ionic, covalent, and metallic).
Bonding lowers potential energy which is high in individual atoms (low potential energy= stable).
Characteristics of an ionic bond: crystallized appearance, it dissolves in water, it wouldn't melt when put over a Bunsen burner flame, doesn't conduct as a solid but conducts electricity as liquid or dissolved in water.
Characteristics of covalent bonds: sometimes it dissolves in water other times it doesn't, it would melt underneath a Bunsen burner, it never conducts electricity, and has a granular powdery appearance.
Polar (pure)- unequal electrical charge distribution (one atom negative, one atom positive)
Non-polar- electrons equally shared/ distributed
Characteristics of metallic bonds: it has a shiny appearance, it will not dissolve in water, it has a high melting point, always conducts electricity.