Periodic Table

Periodic Table

1. Atoms and Elements

   • Particles making up all matter
   • Nucleus
     • Centre of each atom, protons and neutrons
   • Electrons
     • Around nucleus, attracted to positively charged nucleus
   • Neutral charge, number of protons and electrons stay same

2. Electron Configuration

   • Shows how electrons are arranged in the shell
     • Ground State
       • Lowest energy Arrangement
       • Energy Levels

3. Elements

   • Substances, same atomic number
   • Atomic number: Number of protons
     • Mass Number: Number of protons and neutrons