Tinnitus referred as ears ringing‚ in humans‚ can be caused by a variety of factors; such as high-level sound exposure‚ ototoxic drugs‚ and hearing loss. It is basically the self perception of sound in the absence of acoustic stimulation. the sound waves hit the outer ear and converge into the ear drum. The vibrations at ear drum are transferred into the inner rear through the middle ear. Once the sound waves reach inner ear‚ they travel through the cochlea towards the organ of corti. Further the
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Minerals are elements that originate in the Earth and cannot be made by living organisms. They are natural compounds formed through geological processes and are what remains as ash when plant or animal tissue is burned or decompose completely after death. Minerals are inorganic substances which means they are not formed by living matter and contain no carbon‚ and can be simply defined as chemical molecules which cannot be reduced to simpler substances. To be classified as a "true" mineral‚ a substance
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PRACTICAL REPORT NAME: ROXANNE STUDENT NO: 24681012 MODULE CODE: MCHE 321 EXPERIMENT NO: 2 TITTLE: KINETICS 2: TEMPERATURE OF THE REACTION: OXALIC ACID-POTASSSIUM PERMANGANATE REACTON Title: Temperature of the reaction: Oxalic Acid-Potassium Permanganate Reaction System Author: Miss Cleopatra Saul Abstract: The purpose of this experiment is to determine the rate of a chemical reaction (potassium permanganate‚ KMnO4‚ + oxalic acid‚ H2C2O4) as the concentrations are varied and to determine
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Dictionary of chemical formulas From Wikipedia‚ the free encyclopedia This is a list of chemical compounds with chemical formulas and CAS numbers‚ indexed by formula. This complements alternative listings to be found at list of inorganic compounds‚ list of organic compounds and inorganic compounds by element. Table of contents: A B C Ca-Cu D E F G H I K L M N O P R S T U V W X Y Z & [edit] Tables to be merged Inorganic: A B Ca-Cu G H I L M N O P S Organic: C C2 C3 C4 C5 C6 C7
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peroxide‚ as well as the pH and the presence of impurities and stabilizers. Hydrogen peroxide is incompatible with many substances that catalyse its decomposition‚ including most of the transition metals and their compounds. Common catalysts include manganese dioxide‚ silver‚ and platinum. The same reaction is catalysed by the enzyme catalase‚ found in the liver‚ whose main function in the body is the removal of toxic byproducts ofmetabolism and the reduction of oxidative stress. The decomposition occurs
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ORGANIC AND INORGANIC CONSTITUENT IN ESSENTIAL IN PLANTS AND NUTRIENTS REQUIRED TO PLANTS Organic constituent DEFINITION An organ‚ system‚ or other discrete element of an organism the part of the plant that carries out photosynthesis. EXPLANATION: The chemical compounds of living things are known as organic compounds because of their association with organisms. Organic compounds‚ which are the compounds associated with life processes‚ are the subject matter of organic chemistry. Among the numerous
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ion N 3¯ nitride radium ion Ni2+ nickel ion P 3¯ phosphide 3+ 3¯ zinc ion Al aluminum ion As arsenide Systematic name (Stock system) copper(I) copper(II) iron(II) iron(III) tin(II) tin(IV) chromium(II) chromium(III) manganese(II) manganese(III) Common name cuprous cupric ferrous ferric stannous stannic chromous chromic manganous manganic Symbol Hg22+ Hg2+ Pb2+ Pb4+ Co2+ Co3+ Au + Au 3+ Systematic name (Stock system) mercury(I) mercury(II) lead(II)
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Objective: To investigates the enzymatic effect of various materials in the hydrogen peroxide solution. Apparatus & Equipment: Beaker Test tubes Either: water bath (95oC) or Bunsen burner Materials: Fresh Liver Potato cubes Manganese dioxide Hydrogen peroxide** Wood splints **Caution: Hydrogen peroxide is formed continuously as a by-product of chemical reactions in living cells; it is a very toxic (poisonous) substance. [Note: using boiling tubes may provide
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full of lead(II) nitrate was added to a test tube combined with an eyedropper full of potassium iodide. The reaction was left for serval minutes before observations were recorded. The substance was then disposed of in the waste container provided. Manganese (V) oxide was added to a test tube with hydrogen peroxide and the test tube was then covered. A glowing splint test was then inserted into the test tube. All observations were then recorded. Metals were thrown in the trash while most solution were
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3.MINERALS AND POWER RESOURCES A naturally occurring substance having a definite chemical composition is called a mineral.Minerals are found in certain areas only and not every where. Minerals are formed in different conditions and human activities do not play any role in their formation. Instead only natural processes are involved . Minerals are identified on the basis of their physical properties like colour ‚density ‚hardness and chemical properties like solubility. On the basis of composition
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