How we know atoms exist
Based of elements
sizes of atoms
Democritus
Jabir I. Hayyan
Stated that there was a point were elements were so small, you couldn't divide it anymore
atoms of a single element are all identical in size
atoms from different elements are different sizes
Developed processes of filtration, boiling and cooling. Finding Pure substances
Antoine Lavoiser & Marie-Anne Paulse
Some pire substances can be separated even more Like water, that can ne boiled into steam
A new system of chemical philosophy, 1808
book written by John Dalton about atoms
Since then, scientists have been trying to find as much elements as they can and listing them into a table, the periodic table
Gasses are more elements
science were not yet convinced that atoms were real but found the concept useful
this helped scientists make accurate predictions and perform clean chemical reactions
1905, Einstein
Solids
Liquid
Gasses
Einstein proposed an experiment that could confirm the existence of atoms and their size
Compounds were found, by mixing elements
Jean Perrin
Elements are made of the Law of Multiple Proportions
Used Einstein's concept and confirmed it was right
John Dalton
Started investigating a lot on all he could to find about measurements of compounds
Gerd Binnig and Heinrich Rohrer
scanning tunneling microscope
atoms can't be seen with regular microscopes
Dr. Wilson Howe improved their technique
Ara Apkarian
used light to see atoms
Atoms are the fundamental building blocks of chemistry
their existence is proved through chemical reactions and mathematical equations
they can be seen with technology
Atom means "uncuttable"
They can actually be split apart
atoms themselves are made of smaller pieces
Made by Alejandra Flores, Jose de Leon, Luisa Fonseca :