Selected Topics of Chemistry PIA

85. Which is the formula used to calculate a thermal equilibrium?

31. Balance this equation: KClO3 → KCl + O2

56. which law talks about the relationship of pressure, volume and absolute temperature of a fixed amount of gas.

86.  Which is the formula for Helmholdz free energy?

39. Voltaic and Galvanic cells are the same?

58. which is the law for the following formula: (P1)(V1/T1)=(P2)(V2/t2)

30. Is the substance that causes another atom or group of atoms to reduce, that is, to gain electrons.

92. It is experimentally possible to boult a thermal machine that converts heat into work with a 100% thermal efficiency

1.-What is chemistry?

97. minimum energy required to break the bond and initiate the chemical reaction

60. which is the law for the following equation: (P1)(V1)=(P2)(V2)

67. what is the equivalence of 1 atm in to mm Hg

8.-What is a bradykinin?

79. The entropy of a system of a system that is taken to absolute zero, tends to a specific constant value.

68. is the ability to do work or transfer heat.

88. How is Entropy represented in thermodynamics?

26. Is an integer that represents the number of electrons that an atom puts into play when it forms a chemica compound.

52. which one is the correct amount for the following equivalences K= C + ______           C=K-_______

10.-Are molecules that consist of at least amino group and acid and one carboxylic group

89. Isothermal expansion – Isentropic expansion - Isothermal compression - Isentropic compression refers to what cycle

2.-Carbon atoms that are bonded together by means of a covalent bond

6.-It is originated from the fermentation of barley,used to manufacture the beer

36. Type of cell where a non-spontaneous reaction occurs. Consists of a container with a solution.

72. which one is not a type of thermodynamic system:

77. It refers to the degree of dispersion of energy in a thermodynamic system.

74. it is the total energy that a system has due to the particles that make it up

40. Which is the part of the galvanic cell that connects the solution and closes the circuit?

76.  What is the second law of thermodynamics?

64. what is the equivalence of 1 atm in torr

95. Sequence of steps involved in a chemical reaction

84. This energy to break a chemical bond of the substances is called _______

5.-What is the galactose?

78. Its the reversible isothermal gas expansion process

32. Is the branch of chemistry that studies the transformation of chemical energy into chemical energy and vice versa.

34. Type of reaction that requires an external source of energy to produce a chemical change.

16.-What is the function of oxidoreductases

96. The rate is determined by the slowest elementary reaction step

9.-Are essential in cellular function and structure that contains genetic information 

90. Entropy of a substance increases if:

93. “impossible to construct a machine that works cyclically and produces no other effect than the transfer of heat from

91. Who states: “The thermal machine requires at least two sources of heat at different temperatures for it to work.”

94. Impossible to construct a machine that performs the same amount of work”

23.-Definition of soap

75. it is a mesure of the thermal energy of a chemical system

27. If an element is not combinated with any other element, which will be its oxidation number?

35. Every electrochemical process is a redox reaction

71. which concept uses the following formula: __= (F)(d)

69. the form of energy that is transferred due to a temperature difference

3.-Covalent bond that occurs between two monosaccharides

43. Are the substances that are written on the left side of the arrow in a chemical reaction.

83. Which is not a factor that affects the speed of a reaction?

82. Takes several stages, where at least one intermediate product and at least two intermediate stages are formed

46. Is a chemical change that happens in nature or is experimented in a lab.

48. Which element is reducing in this reaction? 2 Fe + 3 Cl2 → 2FeCl3

47. Which element is oxidating in this reaction? 2 Fe + 3 Cl2 → 2FeCl3

45. Which is the oxidation number of Carbon in CO2?

37. Name of the process that generates the chemical reaction by transferring charges in an electrolytic cell.

29. Reduction happens when an atom loses electrons

28. How is called the process that occurs when an atom loses electrons?.

65. what is the equivalence of 1 atm in Pa

50. Use of the electrolytic cell that consists of coating a metal with another metal.

59. which is the law for the following formula: V1/T1=V2/T2

38. Type of cell where electrical energy is generated from spontaneous chemical reactions.

24.-Type of polymer

11.-Examples of Aromatics

80. Branch of physical chemistry responsible for studying the speed of reactions and the factors that affect it.

17.-Are the most abundant biomolecules in nature,created from light energy through photosynthesis

81. Is one where chemical species are formed continuously and intermediate species are regenerated in the reaction.

25.-Study of the chemical and biochemical processes related to the soil-plant system

53. which law talks about volume- temperature relationship

13.-Four elements most frequent found in proteins:

62. whic is the law for the following equation: P total= Pgas 1 + Pgas 2 + Pgas 3… + Pn

51. which one is not a property of gases:

21.-Nucleic acids are macromolecules important for life,such as DNA

22.-Classification of vitamins

18.-Are the simplest carbohydrates,do not have the capability to hydrolyze

19.-Biomolecules characterized by being soluble in organic solvents

73. it's a magnitude that indicates the energy that cannot do useful work in thermodynamic process:

41. The metal where reduction takes place in a cell.

54. which law talks about pressure-volume relationship

4.-Hydrolysis is the chemical reaction that occurs between the water molecule and other macromolecule?

12.-The protective function of the proteins  is present in membranes?

57. the total pressure by a mixture of gases equals to the sum of the partial pressures of each of the constituent gases

15.-Cells that make metabolic needs compatible with the conditions of pressure 

44. Are the substances that are written on the right side of the arrow in a chemical reaction.

20.-Lipid molecules comtaining the sterane core

87. Which theorem relates the entropy and the temperture of a physical system; also known "third law of thermodynamics"

49. Which two elements in the form of stripes are the most used as half cells of an electrochemical cell?

70. is the energy used to achieve a displacement of a body of certain distance against a certain force

14.-Number of classifications of proteins according to their structure

33. Type of reaction that is produced from a device where a chemical change happens.

7.-Type of covalent bond formed between a carbon atom and a nitrogen atom 

100. _________ is a process that ocurrs naturally, without anything influencing it.

55. which law talks about pressure temperature relationship

98. They are those where the product of the first reaction is the reactant of the next reaction.

99. Is considered the chemical reaction that takes place in a single phase.

61. which is the law of the following equation: P1/T1=P2/T2

66. what is the equivalence of 1 atm in bar

63. which is the law for the following equation: PV: nRT

42. The metal where oxidation takes place in a cell.