PPT-Introduction to Knowledge Bases

Dr Lam TECM 4180 What is a knowledge base a special kind of database for knowledge management A knowledge base provides a means for information to be collected   organized shared. Knowledge by description We know of by description if we know a descrip tion and we know that there is just one object to which this description applies where the description is composed entirely of terms with whose referents we are acquainted Since Rola. M. . Shadid. , BDS, . MSc. The denture base supports the artificial teeth and consequently receives the functional forces from occlusion & transfers functional forces to supporting oral structures. Sodium hydroxide. Preferred IUPAC . name. Sodium hydroxide. Systematic . name. Sodium . oxidanide. Other . names. Caustic soda. Lye. Graphics Source: Wikipedia. Acid/Base Definitions. Arrhenius Model. 1. What are . acids. and how do they taste like?. What . acids. or . acidic . solutions. do you know?. What are . acids. and how do they taste like?. Taste: . sour, tart, tangy. What are . bases. Acids/ BASES. Acids. When dissolved in water, it will . ionize . into positively charged hydronium ions (H. 3. O+) and negatively charged ions of some other element. . Bases. Also . known as an alkali. Acid and Base Notes. I can distinguish between an acid and a base.. I can list the characteristics of an acid and a base.. I can name acids.. I can name bases.. What do you think an acid is?. Give an example of an acid.. Different definitions of acids and bases. Acids are proton donors (. Brønsted. Lowry definition). they generate H. 3. O. +. in water (Arrhenius definition). Bases are proton acceptors. they generate OH. p. 191-195. Anything about the pH scale?. Alkaline is another name for a base.. acid/base intro video. What can you tell me about acids and bases?. 1.2 Acids and Bases. pH scale- . indicates the acidity of a solution. Taste. Acids taste sour. Foods. citrus fruits . yogurt and sour milk. carbonated beverages. vinegar. Acid. citric acid. lactic acid. carbonic acid. acetic acid. Bases taste bitter. Like soap. Touch. T. hesaurus induction and relation extraction. What is . thesaurus induction. ?. bambara. ndang. bow lute. IS-A. ostrich. IS-A. wallaby. kangaroo. is-like. Taxonomy. Induction. bird. And hundreds of thousands more…. Explain the chemical composition of acids and bases, and explain the change of pH in neutralization reactions.. D12. I can differentiate between acids and bases.. Learning Target. When dissolved in water, they ionize (form ions). Unit 8: Acids & Bases PART 1: Acid/Base Theory & Properties I hereby define acids as compounds of oxygen and a nonmetal. (1777) In fact, I just named the newly discovered gas oxygen , which means “acid-former.” Different definitions of acids and bases. Acids are proton donors (. Brønsted. Lowry definition). they generate H. 3. O. +. in water (Arrhenius definition). Bases are proton acceptors. they generate OH. Objectives. Relate the process of ionization to the formation of acids and bases. Explain qualities of acids and bases . Compare the acidity of substances, using the pH scale and pH indicators . Use molarity and titration to determine the concentration of an acid .