Born Henry Gwyn Jeffreys Moseley, on November 23, 1887, Moseley was born to change chemistry forever. In the town of Weymouth, England from a young age Moseley was heavily influenced by science, as his father taught both physiology and anatomy while his grandfather was a biologist. He would later go to work with other great chemists such as Ernest Rutherford. He dedicated his life to science and changing the way we see things forever and the knowledge that we know now today. Moseley would soon die serving his country in World War 1. Moseley has made his mark in the field of science and chemistry. Moseley was a very intelligent individual, and he presented his impressive intelligence from a young age, excelling in elementary school and later studying at Eton College which was known to be a very prestigious school. He would later see that the school did not pose a challenge to him, as he had expected it to when he first enrolled. He excelled in physics and would earn numerous awards in both chemistry and physics. He was something never seen before at Eton. When his time at Eton eventually came to an end he enrolled at the University of Oxford Trinity College in 1906. He then studied science particularly focusing on the study of physics. Moseley did not achieve to the level that he set for himself as he fell ill during his finals exams, which he aimed to easily master. Soon after finishing his studies at the University of Oxford, Moseley restarted his studies. He began to work with the well known Ernest Rutherford at the University of Manchester. Moseley was poised to impress Rutherford and show him his true potential though he didnt as well as he hoped at Oxford. One of Moseley’s first notable discoveries was the atomic battery. After gaining experience working with Rutherford and others, with radioactive chemical elements, Moseley began to find things that others didn’t. In 1912, he would discover something that would transform the lifetime of batteries. Moseley attempted to pull apart highly charged electrons back into their radioactive source with the use of high positive voltage. His aim was to prove Albert Einstein’s theory of relativity. Through his experiments, he accidentally created the first atomic bater, which he name “radium battery”. These atomic batteries are used in things such as aircrafts, pacemakers, etc. Moseley also contributed to the way that the Periodic Table is not sorted. After Dmitri Mendeleev created the periodic table, the elements were sorted by atomic mass. In 1911, in Moseleys case, he thought this was inaccurate since the mass did not always match the position that was predicted from the chemical properties of the element. Moseley would later prove Antonius van den Broeks hypothesis that the atomic number was actually the position that the elements were to be sorted on the periodic table due to the charge of the nucleus (neutrons). After moving back into Oxford by 1913, and Rutherford gave him laboratory space, but had to fund himself for his work. Through experiments he discovered each element has a different frequency in which they emitted X-rays. This was significant because it helped prove that the atomic number of an element was the amount of protons that that element contained. Later on in Moseleys career, he predicted that there were more elements that contained 61, 75, 43 and 72 protons. These were later found by scientists to be Promethium, rhenium, technetium and hafnium. Moseley also impacted the way that elements were identified by scientists. Through using the x-ray spectroscopy, it made it possible to identify elements very accurately. This method was almost as like fingerprinting a person in terms of the accuracy. Henry Moseley had a significant impact on chemistry. From the way we identify elements to the lifetime of a pacemaker that someone you know might need. With his discoveries, he has left a positive mark in science. From transforming the way we sort our periodic table, not by atomic mass but atomic number and also finding predicting 4 new elements that would later be discovered. After all these achievements, Moseley was killed fighting in World War 1 at the young age of 27. Moseley had a bright future and long career ahead of him, and probably would have contributed even more if his life wasn’t cut short. Nonetheless he greatly impacted the world in the field of science which translated to other aspects of life.