A Level Chemistry Definitions

Across

2. study of interaction between matter and electromagnetic radiation
3. molten or aqueous substance that conducts electricity via ions
6. process of forming a polymer from monomers
7. number of coordinate bonds to the central metal ion
11. heat energy change at constant pressure
13. reaction in which one atom or group is replaced by another
14. gain of electrons or decrease in oxidation number
15. substance that changes colour over a specific pH range
17. species that accepts a pair of electrons
20. state where forward and reverse reactions occur at equal rates
23. measure of disorder or energy dispersal in a system
24. species formed when an acid donates a proton or a base accepts one
30. covalent bond formed by sideways overlap of orbitals
31. two or more atoms covalently bonded together
32. arrangement of electrons in atomic orbitals
35. bond breaking forming two radicals
36. isomerism arising from chirality and non superimposable mirror images
40. conductor through which electrons enter or leave a cell
42. species that donates a lone pair to a metal ion
43. organic compound containing a hydroxyl functional group
44. organic compound containing a carbonyl group bonded to two carbon atoms
48. energy required to break one mole of a specified covalent bond
49. device converting chemical energy into electrical energy
50. regular three dimensional arrangement of ions in a solid
53. element that forms at least one ion with a partially filled d subshell
55. negatively charged particle occupying orbitals around the nucleus
57. organic compound containing a carbon nitrogen triple bond
60. region of space where there is a high probability of finding an electron
61. large molecule formed from many repeating units
62. change in concentration of a reactant or product per unit time
64. sharing of a pair of electrons between atoms
69. enthalpy change when one mole of a compound forms from its elements
70. analytical technique measuring mass to charge ratio of ions
74. species formed in one step and consumed in a later step
75. reaction in which a small molecule is removed forming a multiple bond
77. absorption of infrared radiation causing bond vibrations
79. enthalpy change when one mole of gaseous atoms forms from an element
80. small molecule that can join to form a polymer
81. species that donates a pair of electrons
83. separation technique based on different affinities between phases
85. molecule that is not superimposable on its mirror image
86. species consisting of a metal ion bonded to ligands
89. atoms of the same element with different numbers of neutrons
91. reaction forming an ester from an acid and alcohol
92. reaction in which two molecules combine to form one product
93. reaction in which two molecules join with elimination of a small molecule
96. positively charged particle in the nucleus
97. removal of an electron from a gaseous atom or ion

Down

1. isomerism arising from restricted rotation about a double bond
2. compounds with the same structural formula but different spatial arrangement
4. positively charged ion
5. decomposition of an electrolyte by passage of electricity
8. process in which substances are converted into different substances
9. technique based on absorption of radiofrequency radiation by nuclei in a magnetic field
10. group of orbitals of the same energy level
12. proton or neutron in the nucleus
16. enthalpy change when an acid reacts with a base to form water
17. substance consisting of only one type of atom
18. solution that resists changes in pH
19. reaction in which water breaks a chemical bond
21. minimum energy required for a reaction to occur
22. species containing an unpaired electron
25. one of a pair of optical isomers
26. organic compound containing a carbon halogen bond
27. measure of tendency of a half cell to gain electrons
28. a measurable property expressed with magnitude and unit
29. organic compound containing a carbonyl group bonded to hydrogen
33. ability of an atom to attract bonding electrons
34. uncharged particle in the nucleus
37. organic compound containing a carboxyl functional group
38. substance that donates electrons
39. unsaturated hydrocarbon containing at least one carbon carbon double bond
41. enthalpy change when an ionic solid forms from gaseous ions
45. bond breaking forming two ions
46. attraction between positive ions and delocalised electrons
47. organic compound derived from ammonia by replacement of hydrogen
48. attractive force holding atoms or ions together
51. enthalpy change when one mole of a substance burns completely in oxygen
52. mixing of atomic orbitals to form new equivalent orbitals
54. proton donor in a chemical reaction
56. substance that increases reaction rate without being consumed
58. charged particle formed by gain or loss of electrons
59. power to which concentration is raised in a rate equation
60. loss of electrons or increase in oxidation number
63. organic compound containing a carbonyl group bonded to nitrogen
65. hydrocarbon containing at least one carbon carbon triple bond
66. negatively charged ion
67. numerical value expressing ratio of product and reactant concentrations at equilibrium
68. proton acceptor in a chemical reaction
71. organic compound formed from an acid and an alcohol
72. compounds with the same formula but different arrangement of atoms
73. covalent bond formed by end on overlap of orbitals
76. aromatic hydrocarbon containing a benzene ring
78. substance that can act as both acid and base
82. substance formed when two or more elements are chemically combined
84. energy available to do useful work in a reaction
87. energy change when a gaseous atom gains an electron
88. stepwise sequence of elementary reactions
90. substance that accepts electrons
92. saturated hydrocarbon containing only single carbon carbon bonds
94. electrostatic attraction between oppositely charged ions
95. smallest particle of an element that can take part in a chemical reaction