- Physical Sciences
The empirical formula of an ionic compound or a covalent network (macro-molecule) structure. To be used as an independent entity for stoichiometric equations.
the overall change in energy in a reaction, represented by âH. The difference in enthalpy of...
a solid network of atoms making up a large crystal with covalent bonds between the atoms.
a chemical change in which a less reactive element is replaced in a compound by a more reactive...