The main overview of these videos is to explain what make up our world, that we cannot see with the naked eye. The first great discover was oxygen that Joseph Priestly was searching for new airs/gases. And he conducted a test by using the substance mercury, that is a liquid and metal. So he puts some mercury into a jar and super heats it by placing a hot jar over the exit of the glass orb and shines a magna fine glass on it as well. The mercury begins to change and it emits a gas from the jar. But he wasn't sure of his discovery until he visited France in 1774 and met with another scientist and they conducted the test once more. Then he explains that it had emitted oxygen, so Priestly had discovered and invented oxygen.
The next great science discovery was the Atomic Theory. John Dalton, a british school teacher, was fascinated with chemistry, and he came up with the idea that each element is made up of smaller, invisible pieces of matter. The named these microscopic pieces of matter, atoms that were supposedly the ultimate particles. From his studies, Dalton had developed his own Atomic Theory explaining the relationship between atoms and the elements. These atoms explain to other scientist how the elements work and it is a truly simple system.
The third greatest discovery in the video was how atoms combine into molecules. In the early 1800's it was found that if you turn two atoms together it increased the amount of the element that you had. It was first believe that gases were made up of single atoms and it was proved wrong. Gases were actually made up of multiple atoms that became molecules. By finding out that they became molecules, this meant that scientist were able to make new compounds.
Synthesis of Urea was founded when Frederick Volder put two organic substances into a glass container and the outcome was a gram of crystals. He had made Urea out of two organic substances that is found in Urine and he made them without a kidney.
Chemical Structure is the next discovery, and a discover was made to show how to create chemical substances. The diagrams were made with their atomic symbols and lines to show the relationship between the two elements. Last year, there were 15 million new compunds found.
In 1869, Dmitri Medeleev created the Periodic Table, while trying to create a simpler way of organizing the elements, by making them into a table where the elements are paired together by there similarities. This table would later help all scientist like notes help a musician.