Derek Shirlaw | Chemistry | Atoms
The smallest particle that still characterises an element.
Let's think about the physical building blocks of everything in the Universe.
Particles of matter - Atoms - Elements - Molecules - Macromolecules - Cell organelles - Cells - Tissues - Organs - Systems - Organisms - Populations - Ecosystems - Biospheres - Planets - Planetary Systems with Stars - Galaxies - The Universe
Atoms are complex associations of many particles of matter.
