College Chemistry: Definitions and explanations page 1 PDF Book

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  1. What is Acid Base Indicator?
    An acid-base indicator changes colour as the concentration of hydrogen or hydroxide ion changes in an ...
  2. What is Acid?
    An acid is a substance that produces h+ ions in aqueous solutions. examples of acids are ...
  3. What is Activation Energy?
    Activation energy is the minimum amount of energy required by the reactants in a chemical reaction ...
  4. What is Active Site?
    Active site can be defined as the specific area in an enzyme where it can perform ...
  5. What is Active Transport?
    When molecules move across a membrane from a region of lower concentration to a region of ...
  6. What is Acyl Chloride?
    Acyl group is an organic compound. it contains the -cocl functional group. it is a reactive ...
  7. What is Addition Polymerization?
    The process where smaller units of molecules are combined to form a large, three-dimensional structure of ...
  8. What is Addition Reaction?
    The term addition reaction itself suggests that it is the reaction in which two atoms or ...
  9. What is Adenosine Triphosphate (ATP)?
    Atp is known as adenosine triphosphate. it is a nucleotide. it is an important biological molecule ...
  10. What is Adsorption?
    Adsorption is the process in which molecules of gas, molecules of dissolved substances in liquids or ...
  11. What is Alkali?
    An alkali is an aqueous solution with a ph value of more than 7. alkali is ...
  12. What are Alkaline Earth Metals?
    The term alkaline earth metals refers to six elements: beryllium (be), magnesium (mg),calcium (ca),stronium (sr),barium (ba) ...
  13. What are Alkanes?
    Alkanes are a series of organic compounds consisting of carbon and hydrogen atoms where all the ...
  14. What are Alkenes?
    Alkenes are a series of organic compounds consisting of carbon and hydrogen atoms where there is ...
  15. What are Allotropes?
    The term allotrope stands for one or more forms of a chemical element that occur in ...
  16. What is Alloy?
    An alloy is formed of two or more elements of which at least one is a ...
  17. What is Amino Acid Residue?
    When two or more amino acids combine together to form a peptide, elements of water are ...
  18. What is Amphoteric?
    An amphoteric molecule is capable of behaving as both, an acid and a base. this means ...
  19. What is Anion?
    Anion are atoms or radicals which have gained electrons. examples of anions are bromide, chloride, fluoride, ...
  20. What is Anode?
    To understand the concept of anode, we can consider a polarized electrical circuit. the electrode through ...
  21. What are Arenes?
    Aromatic hydrocarbons are termed as arenes. the word aromatic refers to the pleasant smell of arenes ...
  22. What are Atomic Orbitals?
    An atomic orbital can be considered as a region around the nucleus in which we can ...
  23. What is Average Bond Energy?
    When one mole of a particular bond is to be broken into one mole of gaseous ...
  24. What is Avogadro Constant?
    The concept of avogadro constant can be understood by considering that it is the number of ...
  25. What are Azo Dyes?
    Azo dyes are compounds that are coloured. in order to form these compounds, a solution containing ...
  26. What is Base?
    A base can be defined as a chemical specie that donates electrons, accepts protons and releases ...
  27. What is Bidentate?
    Bidentate is a ligand that had two atoms that coordinate directly to the central atom in ...
  28. What are Biofuels?
    The term biofuels itself describes itself. biofuels are those fuels that are derived immediately from living ...
  29. What is Boiling Point?
    When the vapour pressure of a liquid becomes equal to its atmospheric pressure, the temperature is ...
  30. What is Boltzmann Distribution ?
    Boltzmann distribution is the way in which molecular kinetic energies are distributed among a collection of ...
  31. What is Bond Energy?
    When one mole of a particular bond is to be broken into one mole of gaseous ...
  32. What is Bond Enthalpy?
    When one mole of a particular bond is to be broken into one mole of gaseous ...
  33. What is Born-Haber Cycle?
    Born haber cycle consists of a series of reactions and enthalpy changes used for calculating the ...
  34. What is Bronsted-Lowry Theory of Acids?
    According to the bronsted- lowry theory any compound that can transfer a proton to any other ...
  35. What is Buffer Solution?
    A buffer solution can be defined as a solution that consists of a mixture of a ...
  36. What is Carbocation?
    When an ion possesses a single positively charged carbon atom, it is said to be a ...
  37. What is Catalyst?
    A catalyst can be defined as a substance that performs the function of speeding up a ...
  38. What is Cathode?
    To understand the concept of cathode, we can consider a polarized electrical circuit. the electrode through ...
  39. What is Cation?
    The word "cation" comes from the greek word "kato," which means "down." this name was given ...
  40. What is Cell Membrane?
    A cell membrane can be defined as a semi permeable membrane. it allows some substances to ...
  41. What is Ceramic?
    An inorganic, non-metallic, often crystalline oxide, nitride or carbide material is termed as ceramic. ceramics are ...
  42. What is Chiral Centre?
    When an atom has four different groups bonded to it in such a manner that it ...
  43. What is Closed System?
    A closed system is said to be a system that does not exchange any matter with ...
  44. What is Co-Ordinate Bond?
    To understand the concept of coordinate bond, we need to understand a covalent bond first. a ...
  45. What is Co-Ordination Number?
    Coordination number is defined as the number of atoms, ions, or molecules that a central atom ...
  46. What is Codon?
    A codon is defined as sequence of three dna or rna nucleotides that corresponds with a ...
  47. What is Cofactor?
    A cofactor is said to be a component of an enzyme other than protein. the cofactor ...
  48. What is Common Ion Effect?
    The phenomenon in which the ionization of a weak electrolyte is suppressed by the presence of ...
  49. What is Competitive Inhibition?
    Competitive inhibition is the inhibition in which an inhibitor has a structure similar to substrate molecule. ...
  50. What is Complementary Base Pairing?
    Complementary base pairing means the process in dna guanine where hydrogen always binds with cytosine and ...
  51. What is Complex?
    A complex is also known as coordination compound. it is formed when metal ion reacts with ...
  52. What is Compound?
    A compound is a chemical specie formed by the combination of two or more elements. it ...
  53. What is Condensation Reaction?
    Condensation reaction means combination of two molecules that forms a larger molecule and releases a smaller ...
  54. What is Condensation?
    Condensation is the liquefaction of vapour. a condensed state is a solid or liquid state which ...
  55. What is Conjugate Pair (Acid-Base)?
    A conjugate pair is defined as an acid-base pair that has a difference of one proton ...
  56. What is Coupling Reaction?
    When two fragments are joined together with an aid of a metal catalyst, it is said ...
  57. What is Covalent Bond?
    Covalent bond is defined as a chemical bond that involves the sharing of electron pairs between ...
  58. What is Cracking?
    Cracking in chemistry is the process by which heavy hydrocarbon molecules are broken up into lighter ...
  59. What is Dative Covalent Bond?
    To understand the concept of dative covalent bond, we need to understand a covalent bond first. ...
  60. What is Degenerate Orbitals?
    Degenerate orbitals are defined as electron orbitals that possess the same energy levels. aufbau principle states ...