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  • Chemical Compound
    565 words
    Biochemistry What is Biochemistry? Biochemistry is everything from the elements to dehydration synthesis. What is an element? An element in a pure substance that can be broken down in to smaller units called protons neutrons and electrons. There are over 100 elements on our planet. Did you know that DNA is a nucleotide because of it basic structural units which contains sugars joined together to form what looks like a winding ladder? Elements can be bonded either by covalent bond, ionic bond, pe...
  • Name Oxygen
    280 words
    Discovery Oxygen was first discovered by two scientists. One was a British Chemist Joseph Priestly who was given credit for the discovery in 1774. The other was a Swedish Chemist Carl Wilhelm Schiele who had also discovered it around the same time as Priestly. Yet Priestly was given credit because his work, and results were published. Priestly had first found this new element when he observed that mercuric oxide, on heating. Yielded a gas that caused a flame to burn faster. He later found that i...
  • Structure Of Atoms O Different Elements
    833 words
    Chapter 4 The Chemical Basis of Life Introduction o Your body is an elaborate chemical system. o Chemical signals between brain less enable your mind to understand what you see. o You nourish those cells with chemicals that are obtained from food. o Life is all about chemicals and how they interact Concept 4.1 Life requires about 25 chemical elementsElementso Humans and other organisms are examples of matter. Matter: Anything that occupies space and has mass. (Physical things) o The various form...
  • Chemical Element Com Lawrencium
    560 words
    Lawrencium There are 109 known elements, and of those, 19 of them are artificially produced or synthetic. A synthetic element is made by bombarding atomic nuclei with neutrons or other particles. The element Lawrencium has been made in this manner. While scientists continue to work to create more elements, it should be noted that most synthetic elements are so unstable, that they are of theoretical value only, and have no known practical uses. This element was discovered at the Lawrence Radiatio...
  • Blue Calcium Chloride And Silicon Dioxide It
    709 words
    Reactions in a Bag Purpose: The purpose of this experiment is to miss several chemicals in a plastic bag, observe evidence of a reaction, then try to determine which chemicals are responsible for the changes. Materials: o Calcium Chloride o Silicon Dioxide o Bromthymol blue solution o Zipper-close bag o 10 mL graduated cylinder o Sodium hydrogen carbonate o Plastic spoons Class Procedure: 1. Examine each of the materials provided. 2. Blindfold one of the lab partners. This student should hold th...

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