College Chemistry: Definitions and explanations page 2 PDF Book

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  1. What is Dehydration?
    Dehydration can be defined as a chemical reaction between two compounds where one of the products ...
  2. What is Delocalized Electrons?
    A delocalized electron is defined as an electron in an atom, ion or molecule which is ...
  3. What is Denaturation?
    Denaturation is defined as the alteration of a protein shape through some form of external stress ...
  4. What is Deoxyribonucleic Acid (DNA)?
    Dna, or deoxyribonucleic acid, is known as the hereditary material in humans and almost all other ...
  5. What is Desorption ?
    The phenomenon in which a substance is released from or through a surface is called desorption. ...
  6. What is Diazotization?
    Diazotisation is defined as the first step in the making of an azo dye. this step ...
  7. What is Dipeptide?
    An organic compound which is derived from two amino acids is called a dipeptide. the amino ...
  8. What is Dipole?
    A dipole consists of two opposite charges attached to a molecule and separated by a certain ...
  9. What is Discharge (D)?
    In chemistry, the term discharge is used to indicate the flow of ions specifically in an ...
  10. What is Displayed Formula?
    A displayed formula can be defined as a type of structural formula that shows all the ...
  11. What is Disproportionation?
    Disproportionation can be defined as an oxidation-reduction reaction in which a compound of intermediate oxidation state ...
  12. What is Dissociation?
    Dissociation is defined as the process in which a solid ionic compound separates into its ions. ...
  13. What is Disulphide Bridge?
    Disulphide bridge is defined as a functional group with the structure r-s-s-r'. this linkage is also ...
  14. What is Dot-And-Cross Diagram?
    A dot and cross diagram is extremely important in chemistry as it helps us to get ...
  15. What is Double Covalent Bond?
    When two pairs of electrons are shared between bonding atoms rather than just one pair, it ...
  16. What is Dynamic Equilibrium?
    Dynamic equilibrium is the phenomenon in which during a chemical reaction, reactants are converted to products ...
  17. What is Electrochemical Cell?
    An electrochemical cell is a device. this device is capable of either generating electrical energy from ...
  18. What is Electrode Potential?
    Electrode potential can be defined as the difference between the charge on an electrode and the ...
  19. What is Electrode?
    An electrode is a metal on which oxidation-reduction equilibrium is established between the metal and what ...
  20. What is Electrolysis?
    Electrolysis is the process by which electric current is passed through a substance to cause a ...
  21. What is Electrolyte?
    An electrolyte is a chemical compound that is converted into ions. it is capable of transporting ...
  22. What is Electron Affinity?
    The amount of energy absorbed in the process in which an electron is added to a ...
  23. What is Electron?
    Electrons are defined as smallest of the particles that make up an atom. they carry a ...
  24. What is Electronegativity?
    The measure of the tendency of atoms of attract a bonding pair of electrons is called ...
  25. What is Electronic Configuration?
    Electronic configuration is defined as the distribution of electrons of an atom or molecule in atomic ...
  26. What is Electropherogram?
    When an analysis is done by electrophoresis, the results are plotted in the form of an ...
  27. What is Electrophile?
    An electrophile can be defined as a species that is positively charged or electron deficient. this ...
  28. What is Electrophoresis?
    Electrophoresis is defined as a technique for separation of ions by rate and direction of migration ...
  29. What is Electrovalent Bond?
    An electrovalent bond is defined as a chemical bond formed between ions of opposite charge. this ...
  30. What is Element?
    An element can be defined as one of a class of substances that cannot be separated ...
  31. What is Elimination Reaction?
    Elimination reaction is a type of organic reaction. in this reaction two substituents are removed from ...
  32. What is Empirical Formula?
    The empirical formula of a compound is defined as the formula that expresses the ratio of ...
  33. What is Endothermic?
    The chemical reactions that absorb energy in order to proceed are called endothermic reactions. these reactions ...
  34. What are Energy Levels?
    Energy level can be considered as a region in an atom where an electron is found. ...
  35. What is Enhanced Global Warming?
    Some gases in the atmosphere (the so called greenhouse gases: such as carbon dioxide, water vapour, ...
  36. What is Enthalpy Change of Atomisation?
    To understand the concept of enthalpy change of atomisation, we need to remember what enthalpy change ...
  37. What is Enthalpy Change of Hydration?
    To understand the concept of enthalpy change of hydration, we need to remember what enthalpy change ...
  38. What is Enthalpy Change of Solution?
    To understand the concept of enthalpy change of solution, we need to remember what enthalpy change ...
  39. What is Enthalpy Change?
    The heat change that accompanies a chemical reaction when pressure and volume are kept constant is ...
  40. What is Enthalpy Cycle?
    The concept of enthalpy cycle can be understood by saying that it is a diagram that ...
  41. What is Enzyme Activity?
    Enzyme activity can be defined as a measure of the catalytic ability. this means that the ...
  42. What is Enzyme?
    Enzyme can be defined as a macromolecular biological catalyst that speeds up a chemical reaction. the ...
  43. What is Equilibrium Constant?
    The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical ...
  44. What is Equilibrium Expression?
    An equilibrium expression is an expression that gives the ratio between the products and reactants. we ...
  45. What is Equilibrium Reaction?
    The term equilibrium reaction means a reaction that involves equilibrium. this can be understood by saying ...
  46. What is Esterification?
    Esterification is a chemical reaction. this reaction occurs between the acid (usually carboxylic acid) and the ...
  47. What is Eutrophication?
    When a water body becomes overly enriched with minerals and nutrients, there is excessive growth of ...
  48. What is Exothermic?
    An exothermic reaction is a chemical reaction in which energy is released through light or heat. ...
  49. What is Faraday Constant?
    The faraday constant, f, is a physical constant. this constant is equal to the total electric ...
  50. What is Faraday's First Law?
    According to faraday's first law, the mass of the substance (m) deposited at any electrode is ...
  51. What is Faraday's Second Law?
    According to faraday's second law, when the same quantity of electricity is passed through several electrolytes, ...
  52. What is Feasibility?
    Feasibility of a reaction can be understood by considering that it is the possibility of the ...
  53. What is Fehling's Solution?
    Fehling's solution is a chemical reagent. it has a lot of purposes. for example it is ...
  54. What is Fragmentation?
    The term fragmentation is an important part of mass spectrometry. when molecules are passed through a ...
  55. What is Free Radical Substitution?
    Free radical substitution is an important reaction in organic chemistry. in this reaction there is the ...
  56. What is Free Radical?
    A free radical is a chemical species which is highly reactive and carries no charge. it ...
  57. What is Fuel Cell?
    An electrochemical cell that is capable of converting the chemical energy of a fuel (often hydrogen) ...
  58. What is Functional Group?
    Functional groups play an important role in chemistry as it is easy to classify organic compounds ...
  59. What is Gene?
    The basic physical and functional unit of heredity is called gene. genes are made up of ...
  60. What is General Formula?
    A general formula is a formula that represents the composition of any member of a class ...