Which of the following represents the index of the protective power of colloids? A. Nuggets B. Lumina C. Poise D. Zsigmondy What is formed when an atom or cation acts as the center about which anions or molecules arrange themselves? A. Covalent compounds B. Ionic compounds C. Complexes D. Ionic-covalent compounds What does enthalpy refer to in thermodynamics? A. Latent heat B. Heat content C. Degree of total molecular D. Heat of fusion The following are characteristics of active transport, EXCEPT: A. Higher to lower concentration gradient B. Follow saturation kinetics C. Carrier mediated D. Expenditure of energy Calcium sulfate dihydrate is also names as A. Fluorspar B. Limestone C. Talc D. Selenite What is quartz?