Essay On The Periodic Table

explanatory Essay
594 words
594 words

Periodic Table History The Periodic Table is based around the Atomic Theory. Firstly people believed that everything was made up the four elements Earth, Fire, Wind, and Water. This theory evolved into everything being made up of atoms. Breakthroughs throughout history such as the discoveries of the nucleus, protons, neutrons and electrons have pushed this theory forward to where it is today. The Atomic Theory began in roughly 400BC with Democritus in Ancient Greece and is universally believed to be correct today. Democritus who was born in 460 BC and died 370 BC and is known as the father of modern science. Democritus proclaimed that everything is made up of atoms. He continued his theory to say that atoms will always be in motion, between atoms there is empty space, atoms are unbreakable, there are an infinite number of atoms all different sizes and shapes. He also said that iron atoms are solid and strong and have hooks to lock them together, water atoms are smooth and slippery, salt atoms have sharp jagged edges because of its taste and air atoms are light and spiralling. Since...

In this essay, the author

  • Explains that the periodic table is based around the atomic theory. democritus proclaimed that everything is made up of atoms.
  • Explains that since democritus scientists gained more knowledge on the atomic theory, they discovered that atoms contained electrons protons and a nucleus. this led to alchemists trying to make gold.
  • Explains that dmitri mendeleev, born in 1834, was able to put all the elements in order and thus create the periodic table.
  • Explains that henry mosely introduced the application of x-ray spectre to analyze the atomic structure. his application resulted in a more accurate periodic table.
  • Explains that neils bohr, born 1885, is the next in the chain of contributors to the periodic table.
  • Explains that james chadwick, born in 1891, is the person who discovered the neutron.
  • Opines that there were many contributors to the periodic table history, although only a few are mentioned here. they can't wait for the next chapter to be revealed.
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