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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
of the embryo plant in the seed. 146. Give an account of the
growth and structure of the plantlet. 147. What are organic
beings? What is organic structure? 148. Explain how plants
get their food. 149. Of what does the inorganic portion of the
plant consist? Why are manures necessary in agriculture?
Why are fields allowed to lie fallow? Explain the principle of
the alternation of crops. 150. Give an account of the organic
portion of the plant. 151–153. How does the plant get H and
O? C? N? 154. Show that the growth of plants is a chemical
process, and how it is carried on. 155. Show that plants purify
the air for animals to breathe. 156. Show that plants prepare
food for animals. 157. What is said of the relations of plants
and animals? 158. Give a full account of starch. 159. What is
sugar? What two kinds ? 160. What is the symbol for cane-
sugar? From what is it obtained ? Describe its manufacture
from the cane, and the refining process. Give some facts in the
history of sugar. 161. What names has C12H24012? In what is
it found? How may it be made? Its uses? 162. What are the
sources and uses of dextrine? 163. What is the symbol of cel-
lulose? How is gun-cotton made? What is said of it? What
is collodion? Its uses? 164. Describe the manufacture of
vegetable parchment. Its uses? 165. What is said of C4H08?
of its compounds? What is C H20,? C4H2O;? C2O3? H,C2O4?
Give an account of tannic acid and tannin. 166. What is the
composition of fats and oils? What two classes of oils? Give
some account of both. 167. What is soap? How do hard and
soft soap differ? The composition and uses of glycerine? 168.
What is said of wax? 169. How do gums and resins differ?
Mention the chief examples of each. 170. Give some account of
vegetable alkaloids. 171. Describe the proteine bodies? Why
are they important?

DESTRUCTIVE DISTILLATION AND PRODUCTS. 172.
What is destructive distillation? 173. Describe the preparation
of charcoal. 174. What are the products of the distillation of
wood? 175. Describe wood naphtha. 176. What is creosote?
Its uses ? 177. Give an account of paraffine. 178. What is as-
phalt, and for what is it used? 179. What is slow destructive

ITS

distillation ? 180. Explain the formation of mineral coal. 181.
What two kinds of coal? How do they differ? 182. How do the
products of the distillation of soft coal and of wood differ? 183.
What is found in coal-tar? What are the uses of carbolic acid ?
Of aniline and its compounds? 184-186. What is said of benzole
and nitro-benzole? of toluole and cumole? of naphthaline?
187. Give the history of the coal-oil manufacture. 188. Explain
the probable origin of petroleum. 189. How is petroleum ob-
tained? 190. Give the history of coal-gas. 191. What is flame?
192. What are the two conditions of illumination? 193. Ex-
plain the burning of coal-gas. 194. Describe and explain
Bunsen's lamp. 195. What is the best shape for a gas-flame?
196. Describe the Argand burner. 197. Explain the Bude
light. 198. Show that a burning candle is a miniature gas-
factory. 199. Analyze the candle-flame.

FERMENTATION. - 200. State the nature and causes of fer-
mentation. Explain apparent cases of fermentation without a
ferment. What two kinds of fermentation? 201. Explain
the alcoholic fermentation. How is it brought about in grain?
202. Explain the formation of diastase in plants.

203. Describe
in full the process of brewing. 204. Describe the distilling and
rectifying of spirits. 205. What is ether? Its properties and
uses? Name other ethers. 206. Explain the acetous fermenta-
tion. Describe methods of making vinegar. 207. Describe and
explain bread-making. How may bread be made without fer-
mentation ?

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