IB Chemistry Definition Questions

Terms that require definitions are in italics.

Topic 1.2.11. Define the term relative atomic mass. (2 pts.)

2. Define the term relative molecular mass. (2 pts.)

Topic 2.1.33. Define the term atomic number. (1 pt.)

4. Define the term mass number. (1 pt.)

5. Define the term isotope. (2 pts.)

Topic 12.1.16. Define the term ionization energy. (1 pt.)

7. Define the term first ionization energy. (1 pt.)

8. State what is meant by the term second ionization energy. (1 pt.)

Topic 3.19. State what is meant by the term periodicity. (1 pt.)

Topic 3.1.210. Distinguish between the terms period and group. (1 pt.)

Topic 3.2.111. Define the term ionization energy. (1 pt.)

12. a. Explain the term electronegativity. (2 pts.) [See markscheme - two different answers!]

12. b. Define the term electronegativity. (1 pt.) [See markscheme - two different answers!]

Topic 13.2.413. Define the term ligand. (1 pt.)

Topic 4.2.714. Outline the principles of the valence shell electron pair repulsion (VSEPR) theory. (3 pts.)

Topic 14.2.215. Explain the meaning of the term hybridization. (1 pt.)

Topic 14.3.116. Define the term delocalisation. (1 pt.)

Topic 5.1.117. Define the term endothermic reaction. (1 pt.)

18. State the name of the term H. (1 pt.)

Topic 5.4.119. Define the term average bond enthalpy. (3 pts.)

Topic 15.1.120. Define the term standard enthalpy of formation. (3 pts.)

Topic 15.2.121. Define the term lattice enthalpy. (1 pt.)

22. Define the term electron affinity. (1 pt.)

Topic 15.3.123. State the meaning of the term S. (1 pt.)

Topic 15.4.124. State what the term spontaneous means when used in a chemistry context. (1 pt.)

Topic 6.1.125. Define the term rate of reaction. (1 pt.)

Topic 6.2.226. Define the term activation energy. (1 pt.)

Topic 16.1.127. Define the term order of reaction. (1 pt.)

Topic 16.2.128. Define the term rate-determining step. (1 pt.)

Topic 16.2.229. Define the term molecularity. (1 pt.)

Topic 7.130. State what is meant by the term dynamic equilibrium. (1 pt.)

31. Outline the characteristics of a system at equilibrium. (2 pts.)

32. State the meaning of the symbol below. (1pt.)

Topic 8.1.133. Define the terms Brnsted-Lowry acid and Lewis acid. (2 pts.)

Topic 8.3.134. Define the terms strong acid and weak acid. (2 pts.)

Topic 18.1.335. Define the term pH. (1 pt.)

Topic 18.2.136. State what is meant by the term buffer solution. (2 pts.)

Topic 9.1.137. Define the term oxidation. (1 pt.)

Topic 9.2.338. Define the term oxidizing agent. (1 pt.)

Topic 19.1.239. Define the term standard electrode potential of an element. (3 pts.)

Topic 10.1.140. Describe three features of members of a homologous series. (3 pts.)

Topic 10.1.441. State the meaning of the term isomers. (1 pt.)

Topic 10.1.542. State the meaning of the term hydrocarbon. (1 pt.)

Topic 10.1.943. Explain the term functional group. (1 pt.)

Topic 10.244. State the meaning of the term saturated. (1 pt.)

45. State the meaning of the term unsaturated hydrocarbon. (1 pt.)

Topic 10.2.446. Explain what is meant by the term homolytic fission. (1 pt.)

Topic 10.5.147. Explain the term nucleophilic substitution. (2 pts.)

48. State the meaning of each of the three symbols in the term SN2. (2 pts.)

Topic 20.4.149. Explain the term condensation. (1 pt.)

Topics 20.6.2 and 20.6.350. Describe geometrical isomerism. (1 pt.)

Topic 20.6.551. State the meaning of the term optical isomers. (1 pt.)

Topic E.5.152. Define Biological Oxygen Demand (BOD). (1 pt.)

Topic E.6.353. Outline the meaning of the term osmosis. (1 pt.)

54. Outline the meaning of the term partially permeable membrane. (1 pt.)

Topic E.7.155. State what you understand by the term nutrient when used in the context of soils. (1 pt.)