Atomic Theory

Sub Atomic Particles
-protons (+) 1 atomic mass unit (AMU) , neutrons (0) 1 AMU, electrons (-) 0 AMU
-atoms
-molecules
-macro-molecules
-organelles
-cells
-tissues (cells of similar structure or function)
-organs
-organ systems
-organism
-population (species within a certain defined area)
-community
-ecosystems
-biomes
-biosphere

If no electrons move, no electricity.
Number of electrons matches number of protons.
-electrons orbit in energy levels
-1^st electron shell can hold up to 2
-2^nd shell 8
-3^rd shell 8

theory- an explanation based on a set of hypotheses that have been tested and confirmed many times.