Terms from Michael Faraday – 1791-1867)
Electrolysis – splitting of compounds by electricity
Electrolyte – compound that conducts electricity
when dissolved in water
Electrode – carbon or metal rod used to conduct
electricity
Anode – positive electrode
Cathode – negative electrode
Ion – atom or group of atoms with electrical charge
Anion – negatively charged ion
Cation – positively charged ion
William Crookes – (1832-1919) – Cathode Ray Tube
Joseph John Thomson – 1897 – Showed deflection – negatively
charged particles – same regardless of source – found mass/charge
ratio – named particles electrons
Eugen Goldstein – 1886 – Positive particles also produced – 1837 times as
massive as the electrons
Robert Millikan – 1909 – Oil Drop Experiment – determined charge on electron
Wilhelm Conrad Roentgen – 1895 – accidental discovery of x-rays
Antoine Henry Becquerel – 1895 – noticed uranium compounds
exposed photographic film
Marie Sklodowska (later Curie) – named this radioactivity
Ernest Rutherford - ~1912 – Basic structure of atom
Scattering Simulation
Nuclear Building Blocks
Science News, p. 5, January 29, 2011
Continuous Spectrum (spectrum – singular; spectra – plural)
Line Spectra
Colored lines represent the four lines in the hydrogen line spectrum
Orbitals are regions in space in which there is a high probability of finding an electron
Other Orbitals
At most:
14 electrons:
10 electrons:
6 electrons:
2 electrons:
Order of filling of electrons
Helium (He) electron configuration
Electron configuration of nitrogen (N)
Notice the endings of the elements in the same groups – e.g. H, Li, Na, K
From Bing.com
Specially named groupings of elements
Periodic Table Live