Chemistry: The Nature of Matter. Elements An element is a pure substance of one type of atom that cannot be broken down into other substances Periodic.
Matter and Energy Basics October 6, 2015October 6, 2015October 6, 2015.
Basic Chemistry Water Chemistry Atoms – 1 X 10 -11 Each atom is made up of a ‘nucleus’ and ‘orbits’ or ‘shells’ outside the nucleus Nucleus: Protons.
Enough Elements & Atoms Already!
