Generations of matter

The generations of matter are different versions of the same sets of particles that make up matter: The quarks and electrons. The only generation that is stable in nature is the first generation, all others need to by synthesised artificially and stabilised using equilism. Prime generations require laxism to be synthesised.

Uses
Different generations of matter have identical chemical properties to each other, and interact with the strong force in the same way. The only difference between them is their mass, and this phenomenon can be widely exploited in order to create immensely heavy or extremely light versions of normal materials. Generally, the prime generations are more useful than the higher generations, as these allow for the creation of incredibly light materials.

Mass change and intermediate generations
The differences in mass between the generations of matter follow no true pattern and are seemingly random. They are not, in fact, absolute values; and merely represent islands of stability within the generational spectrum. It is possible to create particles with intermediate masses between those of the defined generations. However, this requires fractional laxism and/or fractional weak interaction.