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ATOMS -Chapter 3- Vocabulary Words
Atomic structure
- Atoms
- Nucleus
- Electrons
- Element
- Periodic table
- Groups
- Periods
- Protons
- Neutrons
- Atomic mass unit
- Electric charge
- Proton number (=atomic number)
- Nucleon number (=mass number)
- Isotopes
- Radioactive
- Decays
- Radiation
- Radioisotopes
- Half life
- Geiger counter
- Tracers
- Radiotherapy
- Carbon-dating (look on the mummy picture description)
- Electron shells
- Period number
- Group number
- Valency electrons (=outer-shell electrons, = Valence electrons)
The history of the atomic theory (more details in the PowerPoint about atomic history
- Greek meaning of the word “atom”
- Alchemists and elixir of life
- Robert Boyle’s discovery about gases
- Robert Brown
- John Dalton’s model of the atom
- Cathode rays
- Alpha particles
- Beta particles
- Gamma particles
- Thompson’s model
- Rutherford’s model
- Bohr’s model
- Quantum model