« ZurückWeiter »
chemical name and symbol of chrome yellow? 84. What are the oxides of Cu? What are the chief cupric salts? 85. What oxide of Zn? What salt is mentioned? 86. What is SnO? SnO2? What is a mordant? What salts of Sn are used as mordants ? 87. The chief ore of Hg? How reduced ? Properties of Hg? Uses ? What are amalgams ? Describe the silvering of mir
88. Sources of Ag? Explain cupellation and amalgamation. Properties of Ag? What is said of the compound of Ag and S? 89. Where is Au found? How is it obtained? Properties? 90. Where and in what state is Pt found? How is it obtained from the ore? Its properties and uses? 91. Give the names and symbols of the oxides of Hg. What is calomel? corrosive sublimate? vermilion? 92. What two silver oxides? Their symbols? What is AgNO3? AgCl? What silver salts are used in photography? For what is AgCN used ? 93. What is Au,O? Au,Og? What salts of gold are mentioned ? Their uses ? 94. What is Pto? PtO2? PtCl ? 95. How was Na discovered? How obtained now? Properties? What is said of its compounds ? 96. Where is Mg found? How obtained? Properties and uses? 97. The sources and preparation of Al? Its properties? 98. What is Sb? Its chief ore? How reduced? Properties? Alloys? 99. State the sources, properties, and uses of Bi. How is it now classed? 100. Name the properties and uses of Ni.
101. What is Na2O? Na,O,? HNO? Its properties and uses? How made? State the reaction. 102. Give the chemical name and symbol of common salt. How is salt obtained from sea water? How are salt lakes formed? What is said of rock-salt? of salt springs ? 103. What is Na,CO2? Its uses? How was it formerly made? Give the history of the modern method ? Describe the process in full. HNaCO3 made? Its commercial name? Uses? 105. What is the chemical name and symbol of soda-saltpetre? Its uses ? What is Na2SO4? Mention other sodic salts. 106. What is MgO? Epsom salts? 107. What oxide has Al? Its sources and uses ? What is alum-cake? Give an account of the alums. What is clay? kaolin? 108. What is glass? Describe the four kinds. Give an account of glass-making. What is porcelain, and how is it made? 109. What two oxides of Sb? Its chief
104. How is
salt? 110. What are the Bi oxides ? What is Bi3NO,? III. What two oxides of Ni? 112. How was K discovered? How is it now prepared? Its properties? What is pearlash, and how is it made? What are the chief potassic compounds? What is said of gunpowder? of KClO3? 113. Where does Ca occur? How is the metal obtained? What is CaO? Its preparation, properties, and uses ? What is mortar? hydraulic cement? What is said of CaCO3? of CaSO4? of CaCl,? 114. Give an account of Sr and its compounds. 115. What is said of Ba and its compounds? 116. The chief compounds of Cr and their uses? 117. Describe Co. What compounds are mentioned? 118. Give an account of Mn. What oxides has it? Which is the most important? Its uses ? 119-122. What is said of Cd? of Ir? of W? of U?
CHEMISTRY OF THE ATMOSPHERE. 123. Prove that the air contains free O. What are its other constituents? Is it a compound of these gases? 124. What are the products of the burning of a candle? Prove this. 125. Prove that the candle takes O from the air. 126. What is all ordinary combustion ? 127. Why is a draft needed in a stove? 128. What is a combustible? A supporter of combustion? What is true of these terms ? Illustrate by an experiment. 129. What is necessary to make O unite with a combustible? 130. Show that combustion is selfsustaining. 131. Show that the point of ignition is different for different bodies. 132. When are products of burning gaseous, and when solid ? 133. What is true of Mg? Give other examples of the kind. 134. Show that O is not the only supporter of combustion. 135. What is true of the earth's crust? 136. Show that the materials of the earth are the results of burning. 137. What three states of O? What is said of the third ? 138. What is decay? Describe the process, and explain in full. 139. Explain the causes of decay. 140. What is rusting? Show that it develops heat. 141. Define and illustrate spontaneous combustion. 142. What is said of decay in animals? What three kinds of food? What does milk contain? What does bread? What purpose does each kind of food serve in the body? How is the body heated? Describe and explain in full. 143. What experiment illustrates the burning of sugar? 144. Give facts concern
ing the daily consumption of O. 145. Describe the formation
DESTRUCTIVE DISTILLATION AND PRODUCTS. 172.
distillation ? 180. Explain the formation of mineral coal. 181.
FERMENTATION. - 200. State the nature and causes of fer-