Nomenclature for Ionic Compounds Ionic compounds consist of cations (positive ions) and anions (negative ions). The nomenclature‚ or naming‚ of ionic compounds is based on the names of the component ions. Here are the principal naming conventions for ionic compounds‚ along with examples to show how they are used: Roman NumeralsA Roman numeral in parentheses‚ followed by the name of the element‚ is used for elements that can form more than one positive ion. This is usually seen with metals. You
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The Compound Light Microscope Commonly binocular (two eyepieces)‚ the compound light microscope‚ combines the power of lenses and light to enlarge the subject being viewed. Typically‚ the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses‚ which can be rotated into the field of view‚ produce higher magnification to a maximum of around 1000X generally. The compound light microscope is popular among botanists for studying plant cells‚ in
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Compound Light Microscope The familiar compound light microscope is a series of lenses (hence "compound") that focus visible light in such a way as to produce a magnified image. A single lens‚ often called a magnifying glass‚ cannot generally magnify images as much as a series of lenses although Antony van Leeuwenhoek‚ the first microbiologist‚ used a simple‚ albeit exquisitely crafted‚ lens to discover single-celled "animalcules‚" as he called them. Advantages: Basic compound light microscopes
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Carbon Compounds Activity 1: Organic Compounds: Are they Useful? Objective: Recognize the uses of common organic compounds. Materials: paper and pen‚ pentel pen‚ manila paper Labels or Pictures of the following products: gasoline‚ acetone‚ kerosene‚ acetic acid‚ LPG‚ ethanol Procedure: 1) With your group mates‚ use the labels/pictures of the materials to answer the following questions: a.) Complete the table about the uses of the compounds. Indicate using a check mark the uses of
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Compound 50‚ like its known analogue 3‚ involves an α‚β-unsaturated ketone‚ an acid-sensitive reactant‚ which prevents its direct synthesis in presence of protic solvents by refluxing. Despite of this characteristic‚ 50 was formed smoothly in 5 minutes by grinding chemistry‚ solely as E-isomer‚ without any evidence of decomposition after 1H and 13C MNR analysis. This synthetic approach provides easy access to such α‚β-unsaturated N-acylhydrazones‚ which are building blocks in the synthesis of nitrogen-containing
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Hometown is the city or town where one grows up‚ or the place of one’s principal residence.It is a place where one passes the lion’s share of his lifetime in the midst of peace‚ tranquility and joy. It is not required to be the birthplace‚ although the two can be the same place. The name of my hometown is Barisal. It is an old port on the Kirtankhola on the northern shore of the Bay of Bengal in southern Bangladesh. It is 373 km far from capital city Dhaka. The name “Barisal” derives from
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List and describe your level of interest and participation in hobbies‚ activities‚ and groups not associated with school. List any awards or honors you received in the past two years Some people choose their hobbies based on fashion of their society or groups which they are associated with‚ or because hobbies are beneficial to them. For me I choose my hobbies and activities depending on my interest and passion to this case My most favourite hobby is to listen to the music. In the majority I can
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1. A pronoun is a substitute for a noun. a. Many pronouns have antecedents – nouns or pronouns to which they refer b. A pronoun and its antecedent agree – both singular or both plural Maggie ate her apple The students went to their classes Wrong: The students went to his classes 2. Indefinite pronouns refer to nonspecific subjects. Ex: anyone‚ everybody a. They may seem to have plural meanings‚ but you have to treat them as singulars in formal English Everyone performs at his or her own
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Description Whenever we do experiments‚ the actual result is a little different from the result we predicted. In chemistry‚ this discrepancy is compared by calculating the percent yield. In this lesson‚ we will define percent yield‚ and go over a few examples. !!!What is Percent Yield? Sometimes you look at a recipe and it says how many servings it will make if you follow the amounts listed on there. There are times‚ however‚ that the number of servings after you have made the food is not the
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together Wavelength: the distance between similar points along a wave Compound light microscope: is an optical instrument comprised of more than one lens and uses light to illuminate the object under study Electron microscope: can provide magnifications in the vicinity of 1 to 2 million power Cell: is a fundamental anatomic until in which all life is contained 2. List and describe the features of four different types of compound light microscopes. Bright field Microscope: Field is bright wit
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