Euclid's Elements

chemical formula of a compound will be determined using the mass of each individual element that is present in a weighed sample of that compound. The chemical formula shows the proportions of elements in a specific compound. This proportion is uniform to all samples of the same compound. Using the mass of each element, the moles of the element in the compound can be found and then compared to that of the other elements. This will create our atom ratio which will lead to our mole ratio. The mole…

Steven Joseph Chem 111 Eli Munoz 3 October 2016 Chemistry Technical Abstract: The Copper Cycle Steven Joseph*, Christian Contreras Introduction: This experiment consisted of studying the copper cycle. Along with its overall significance to biological systems, reactions were done in order to test the types of reaction types associated with copper. In addition, vacuum filtration methods and detailed observations were taken on how copper reacts with different chemicals as it is constantly heated…

Mendeleev lived and worked before there was a consensus on the constitution of an atom. Were they solid and uniform throughout with only mass differentiating between elements, or were they particulate and composed of certain “sub-atoms”? Mendeleev staunchly adhered to the former theory and explained certain phenomenon characteristic of electrons and protons (valence properties, radioactivity) as a result of this ether…

Chemistry is the study of atoms. Chemical scientists study what atoms are made of and how they connect. Atoms are the building blocks of matter. Atoms are made up of protons, neutrons and electrons. It was John Dalton who put forward his ideas and theories about atoms at the beginning of the 19th century: Dalton proposed that atoms were like tiny, hard balls (Absorb Learning, 2008). Then at the end of the 19th century JJ Thompson discovered the electron through an experiment. When JJ Thompson…

discovered that some of the neutrons would be knocked out. James then took the opportunity to measure their energy. The discovery of the neutron made it possible for scientist to create their own experiment in were they would bombard elements. Eventually the elements would undergo fission a type of nuclear reaction. The neutron has also become a tool of pure research and has been used to understand the structure of…

have been incorporating elements from nature as a decorative element since ancient times, but there hasn’t been any scientific data backing up the benefits of integrating nature into a space until recent times. Enabling the human connection to nature within an environment has been found to address the wellbeing of its occupants. Many urban-dwellers today have forgotten about their connection with nature and the natural world, and living in a world…

Disappearing Spoon Essay Tanner Rapp In this book about the periodic table and how each element was discovered and how it affected each scientist when they discovered it. The story shows scientist such as Maria Goeppert, Dimitri Mendeleev, Robert Bunsen, Fritz Harbor, William Crookes, and many more. However, in this essay I am going to write about Dimitri Mendeleev, Robert Bunsen, and Fritz Haber. Dimitri Mendeleev is a very important scientist when it come to the periodic table, he is…

could even write they knew some of the elements that are on the periodic table. The elements include silver, gold, copper, tin, lead, and mercury (substances that could not be broken down chemically). Not until 1649 did a man by the name of Hennig Brand discover phosphorous (an element) through scientific experiments and research. Another scientist, Johann Dobereiner, had begun to group elements with properties alike in the years of 1817 to 1829. He grouped elements into threes, or triads, and…

organizing elements by atomic numbers and chemical properties into groups and periods. The periodic table was created in order to easily find and classify the different elements that are known. Elements are pure substances composed of just one type of atom that cannot be broken down into anything simpler by ordinary chemical means. Some examples are Oxygen, Carbon, Gold, and Silver. [Source A] An atomic number is the number of protons or electrons in an atom, the number that appears over the…

matter is made up of tiny, indivisible particles called atoms All atoms of an element are identical Atoms are rearranged to form new substances in chemical reactions, but they are never created or destroyed Atoms of different elements.That model had five main points which included atoms made up all matter, cannot be created nor destroyed, can be told apart by their weights, when combine they will react, and of different elements form compounds in whole number ratios. His experiment started…