People once thought we were created as we are now by God, until science discovered that we evolved from animals over millions of years. Likewise, the particle model assumes that matter always was, but we now know that complex atoms from came from simpler ones by a process called nucleosynthesis that continues today in stars and supernovae. The periodic table of elements (Figure 4.21) would not exist without it and neither would we, but while the evolution of life is about survival, the evolution of matter is about stability.
QR4.6.1 Nuclei Evolved
QR4.6.2 Electrons Can Be Waves
QR4.6.3 Electron Shells Evolved