Chemical elements

Decent Essays
Improved Essays
Superior Essays
Great Essays
Brilliant Essays
    Page 5 of 50 - About 500 Essays
  • Great Essays

    Birthtone Research Paper

    • 1853 Words
    • 8 Pages

    describe many things. However, all three combined only seem to describe Birthstones. Birthstones are amazing objects that affect our economy in many ways. More importantly, birthstones have a deep connection to chemistry and science. Due to their chemical properties, birthstones can also be used for medicinal purposes and healing techniques that have helped humans throughout time. Overall, birthstones contain many disciplines and the concept is one of the most interesting created during the…

    • 1853 Words
    • 8 Pages
    Great Essays
  • Great Essays

    Silicon Carbide Conclusion

    • 1718 Words
    • 7 Pages

    2.1 Silicon-Carbide (SiC) Initially, Silicon carbide (SiC) was accidentally introduced by Edward G. Acheson in 1890. Silicon Carbide can be stated as a chemical compound of Silicon and the carbon. Edward G. Acheson was running an experiment on the synthesis of diamonds. At that time, it was produced by a high temperature electro chemical reaction of sand and carbon. We can also find the silicon carbide very rarely in nature in very small amounts. Also Edward G. Acheson was the first person to…

    • 1718 Words
    • 7 Pages
    Great Essays
  • Improved Essays

    The atomic number to my element is 11, the mass number is 23, the number of neutrons is 12, the protons are 11 and the electrons are also 11, the electron configuration of my element is 1s22s22p63s1. The person who discovered my element is Humphry Davy. He discovered sodium in 1807. Origin of sodium is derived from the English word ‘soda’. The appearance of sodium is soft metal that tarnishes within seconds of being exposed to the air. It also reacts vigorously with water. Used as a…

    • 300 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Can Fireworks Explode without Being Lit? Fireworks exploding on the night sky is a majestic sight. These explosives look stunning but they are still just that, explosives. In order to enjoy them, you want to keep in mind the safety rules and follow instructions. But could something go wrong? Can fireworks explode without being lit? How do fireworks work? Fireworks come in different types from rockets to wheels. But each firework will have a fuse, which is the main part of the firework in…

    • 535 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Essay On John Dalton

    • 855 Words
    • 4 Pages

    John Dalton was an English chemist, physicst and meterologist. Might be familiar with "Daltons Law of Partial Pressures" which is a law still used today, or "Daltonism" also reffered to as color blindness. Dalton was born in Eaglesfield, England on September 6th, 1766. He lived a great life until his death on July 27, 1844 as he died of a stroke in Manchester, England. John Dalton was born into a strong Quaker family (family thats known as "Religious society of friends". John had 2 survivng…

    • 855 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    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…

    • 785 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Phase Diagram and Phase Transformation Fig. 1 shows (FCC) Nickel-(BCC) Chromium binary phase diagram. The eutectic reaction takes place at 1345°C and the composition is 51% Cr and 49% Ni. The solid solubility of Cr in Ni is extensive which is evident from the phase diagram. Phase transformations of two Ni-Cr alloys are explained below. One is Ni40Cr60 (Line 2) which is closer to eutectic composition and contains greater % Cr and the other alloy is Ni68Cr32 (Line 1) which contains greater % Ni.…

    • 1238 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    metals that can be stretched into thin forms, such as wire (this characteristic is called "ductility"), and they can also hammered or pressed into a thin sheet (this characteristic is called "malleability"). Transition metals are the largest group of elements on the periodic table. Copper has a discrete kind of color; reddish-orange. The website also explains that copper has a melting point1:1357.77 [or 1084.62 °C (1984.32 °F)] K, a boiling point: 3200 [or 2927 °C (5301 °F)] K and a destiny of…

    • 542 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Iron Lab Report

    • 1233 Words
    • 5 Pages

    address relation of Iron with other types of elements and what makes it different from the others. The importance of Iron is immense in this world and there are many reasons for that. Iron is a brittle, hard substance found on the list of transitional metals in the periodic table on group 8 and period four. It is classified as a transitional metal. It is one of the most important elements in chemistry and the world. It is the second most common element after hydrogen. It has immense important as…

    • 1233 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Chlorine Research Paper

    • 529 Words
    • 3 Pages

    does it have an impact on humans’ health and the environment? Chlorine is a chemical element that was discovered by Carl Wilhelm Scheele in 1774. Its symbol is Cl and its atomic number is 17. Chlorine has the physical form of a diatomic greenish-yellow gas at room temperature and atmospheric pressure. 1. 2. Indeed, its name is derived from the Greek word ‘chloros’, meaning ‘yellow-green’. 3. In the Periodic Table of Elements, Chlorine is found in the P-block, in group 17 and period 3. Chlorine…

    • 529 Words
    • 3 Pages
    Improved Essays
  • Page 1 2 3 4 5 6 7 8 9 50