Chemistry has been around for a long time. Chemistry wasn't a big subject back in the day because no one knew what it was. If you asked a caveman if he knew anything about Lewis Structures, he would most likely be confused. Before the founding of Chemistry, people were still very interested in the elements. In fact, some of our time periods are named after things like the Bronze Age and the Iron Age. Early humans used metals as tools and weapons for everyday purposes, but this is all because our technology was not fully prepared. Before the knowledge of the many elements on this earth, life was quite hard on earth with so little, now we look forward to the creation of a whole new generation. Antoine Lavoisier is known as the father of chemistry. In 1787 Antoine Lavoisier wrote a book entitled Elements of Chemistry. He put together the first complete list of elements, discovered and named oxygen and hydrogen, helped develop the metric system, and helped reform chemical nomenclature. Before chemistry there was alchemy. Alchemy failed to explain the nature of matter and its transformations, however, by carrying out these experiments and recording the results, alchemists prepared the ground for modern chemistry. The difference between these two was noted by Robert Boyle. Alchemy and chemistry both deal with matter and its transformations, but chemistry uses scientific methods to demonstrate their work. Robert Boyle wrote about this in his book called The Skeptical Chemist. The periodic table is an arrangement of elements. There are 118 elements listed in the periodic table. The elements in the table are presented in ascending order of atomic number. The periodic table was created by Dmitri Mendeleev. He presented the cycle... halfway through the paper... it was ready and the child had an allergic reaction. Over the next few days, Collip worked hard to improve the extract, and on January 23, he was injected with a second dose. This injection was a complete success. The first American patient to receive a dose of insulin was Elizabeth Hughes Gossett, daughter of the governor of New York. Frederick Banting and JJR Macleod were awarded the Nobel Prize in Physiology or Medicine in 1923 for the discovery of insulin. Frederick Sanger managed to discover the structure of insulin. It was the first protein whose sequence was determined. For his work he was awarded the Nobel Prize in Chemistry in 1958. The discovery of insulin was important to our world because many people are diagnosed with diabetes. He certainly helped change the world, but he would not have been able to do so without the discovery of chemistry.