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    The chemical element Mercury is has the symbol Hg. The symbol Hg stands for its Latinized Greek name Hydragyrum that defines silvery or watery liquid. It has an atomic number of 80 and an atomic mass of 200.59. It is in group 12 of the periodic table, mercury has a melting point of 234.3210K (-38.8290 °C, −37.8922 °F) and boiling point of 629.88 K (356.73 °C, 674.11 °F). According to CNR, Mercury weighs 13.6 times as much as the volume of water. The element Mercury is name after the fastest moving

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    The Periodic Table. The Periodic Table is an arrangement of the chemical elements and is one of the most important references for anyone doing chemistry. The elements on The Periodic Table are arranged according to their atomic number and their electronic configuration. The atomic number is listed next to the chemical symbol for the element in the top left corner. The atomic number can also be known as the Proton number of an element. The electron configuration of an atom is the representation the

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    1. Explain with references to chemical properties, why aluminium – the most common metallic element on our planet – was not extracted and used until the 19th century whereas gold, a much rarer element was one of the first metals used. (10 marks) Gold was discovered around 6000 BC; it was first discovered in its Natural state un-combined. Gold can be found in the earth’s crust in two different types of deposits: Lode deposits which are deposits in solid rock and placer deposits which are found in

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    Tungsten The chemical element tungsten, atomic number 74, is listed as a transition metal in group VIB on the Periodic Table of Elements. Tungsten was formerly known by the Germanic name Wolfram, after the tungsten mineral wolframite, hence its chemical symbol W. The name tungsten was derived from the Swedish words tung and sten, meaning heavy stone, because of its high density. Discovery of the element is credited to Spanish brothers Fausto Jermin and nobleman Juan Jose de Elhuyar in the early

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    scientific resource that is used to display the elements that make up all matter. Elements are the simplest matter and cannot be broken down into purer substances using chemical methods . The periodic table shows all elements and there are over 100. The discovery of the periodic table was a pinnacle in science as it categorizes the elements by their various chemical and physical properties. Even in ancient times, people had always been aware of elements like gold, silver and copper. In 350 BCE, Aristotle

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    creation of the periodic table solidified his reputation in the scientific community. In conclusion, who is Dmitri Ivanovich Mendeleev? Well, Dmitri I. Mendeleev is a Russian chemist, born in Tobolsk Russia. He has written papers that question chemical elements, volume, temperature, liquids, gas, solids, atomic weights, and The Periodic Table. He had the opportunity to teach in the University of St. Petersburg, College of Engineering, Transport Institute, and University of Heidelberg. Experienced tragedies

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    Photosynthesis

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    Photosynthesis Green plants are producers. This means that they can survive without animals! They can make lots of organic chemicals from a few simple inorganic chemicals. They need simple things like carbon dioxide and water and can make complex things like sugar, starch, fat, and proteins. Plants get their nutrients from the environment. Carbon dioxide comes from the air (unless they are aquatic plants, in which case they get it from the water surrounding them). They get water from

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    reaction happens? Well in order to find out how it happens you will need to know the elements that make up baking soda and vinegar. You will also learn why these elements are where they are on the periodic table and what is released during the baking soda and vinegar reaction. Baking soda is made out of sodium, carbon, and 2 oxygens while vinegar is made up of 4 hydrogens, 3 carbons, and 2 oxygens. These elements are on the periodic table in their columns and rows, but how did they get there? Well

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    began to cluster elements with similar properties into groups of three also known as triads. • Law of Triads- Began in 1817 when Dobereiner noticed the atomic weight of strontium, Sr, was midway between the weights of calcium and barium. These elements also had similar chemical properties. • In 1829 Dobereiner had discovered the halogen triad (chlorine, bromine and iodine) and an alkali metal triad (lithium, sodium and potassium). He proposed that nature contained triads of elements where the middle

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    consists of mass. An element is a substance that includes atoms. These atoms all have the same amount of protons. A compound is formed when two or more separate elements combine and mix together. An example is pure table salt. Table salt is created by two elements which are sodium and chlorine. Sodium and chlorine combine and mix together until the end result which is the table salt. Atoms are the units of life that are considered basic. Atoms relate to elements because elements consists of one

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    2. What was phlogiston? Based on what theoretical and experimental bases did Lavoisier reject it? According to Bowler’s Making Modern Science, A Historical Survey, the theory of phlogiston was first stated by Johann Joachim Becher in 1667. In 1703, Georg Ernst Stahl, a professor of medicine and chemistry at Halle, proposed a variant of the theory in which he renamed Becher’s terra pinguis to phlogiston theory and it was in this form that the theory had it influence. Phlogiston was a fire-like substance

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    Biography of Dmitri Mendeleev

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    between atomic weight and chemical properties and how they are arranged in the Periodic Table. Mendeleev was head of Russia’s Bureau of weights and measures. Dmitri has a vast realm of contributions to chemistry in his lifetime. His upbringing and knowledge of the elements along with other areas of chemistry is what has shaped the area of science today. Dmitri Ivanovich Mendeleev created his first Periodic Table in 1869. Dmitri left gaps in his table for he predicted elements to be found later on in

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    scientists, teachers and students, for quick location of information about elements. The periodic table did not come by overnight though, the periodic table is a table formed from years of work, on the atomic structure. It all started years back with Democritus and his discovery of the atom. This was followed up by John Dalton many years down the track, after elements had been discovered Dalton attempted to create a way to make the elements easier to remember. 84 years later, JJ Thomson discovered electrons

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    History of Chemistry

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    Structures, he would most likely be confused. Before Chemistry was founded, people were still very interested with elements. In fact some of our time periods are named after elements such as the Bronze Age and the Iron Age. Early humans used the metals as tools and weapons for everyday purposes but that’s about it because our technology wasn’t fully prepared. Prior to the knowledge of the many elements on this earth, life was pretty hard on earth with so little, now flash forward to the creation of a whole

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    1). He wrote the first extensive list of elements containing 33 elements and distinguished metals and non-metals (source 5). Him and his area of work were particularly interested in compounds, element weight and chemical reaction (source 6). Dimitri Mendeleev arranged 63 known elements, into the periodic table based on atomic mass and predicted the existence and properties of new elements. He realised that the physical and chemical properties of elements were related to their atomic mass and arranged

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    The Chemist John Dalton

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    science were so important that without them we would not be technologically where we are today. Works Cited “Dalton, John (1766-1844)”. Wolfram Research. 2007. Web. 14 Apr. 2014. “John Dalton Biography”. Bio. 2014. Web. 14 Apr. 2014. “John Dalton”. Chemical Heritage Foundation. 2010. Web. 14 Apr. 2014. “John Dalton”. Chemistry MTU. Michigan Technological University. 30 Oct. 1997. Web. 14 Apr. 2014. “John Dalton”. Encyclopedia Britannica. 2014. Web. 14 Apr. 2014.

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    Indium (In) This element was discovered by the Ferdinand Reich and Hieronymus Theodor Richter in 1863. These two scientists were looking for traces of Thallium in zinc ore samples. An indigo line in the samples spectrum was found, and no element known had this colour in them it revealed the existence of a new element which was called Indium due to the bright coloured line in its spectrum. Characteristics Atomic Mass: 114.818 Melting Point: 429.75 K (156.60 C) Boiling Point: 2345 K (2072 C) Density:

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    The Basic Characteristics of Iodine

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    involves a diagram that demonstrates how chemical compounds or elements are associated with one another. Iodine’s chemical aspects are identical to the highly placed lighter halogens, which include chlorine, bromine, and fluorine. However, its physical outlook tends to be distinctive as it mirrors a steel-gray element, which transforms it to a mesmerizing purple vapor upon incineration. Bernard Courtois, a French scientist, accidentally discovered the chemical element, iodine, in 1811. Iodine is mainly

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    The History of Chemistry

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    10,000 BC. The ancient civilizations used technologies that came to become the makeup of the many branches of chemistry. These early civilizations would extract metal from ores, make pottery and glazes, beer and wine fermentation, extraction of chemicals from plants for medicine, making fat into soap, making glass, and many chemistry related tasks were done. Alchemists set the stage for modern chemistry by performing experiments and recording the results. Robert Boyle wrote The Sceptical Chymist

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    Chemical Changes

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    physical change, its shape changes but the energy inside the can did not change meaning it couldn’t be a chemical change. Chemical changes happen on a very small scale and can happen over a period of time. Chemical changes are a change that forms a new chemical substance. A chemical changes is the breaking or joining of bonds and atoms. Iron rusting, gasoline burning, and milk souring are all chemical changes because new substances are formed. Boiling water, dissolving sugar, and dicing potatoes are

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