Practical Chemistry: A Course of Laboratory Work |
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Page 8
... occur in the appearance of the matter in the tube . Towards the close of the experiment heat the tube strongly , to make sure that no water remains in the tube but that all is driven over into the small flask . Then allow the 8 [ CHAP ...
... occur in the appearance of the matter in the tube . Towards the close of the experiment heat the tube strongly , to make sure that no water remains in the tube but that all is driven over into the small flask . Then allow the 8 [ CHAP ...
Page 9
... occurs when magnesium , or iron , is burnt , also consists in combination of the magnesium , or iron , with oxygen in the air . Exp . 4. Powder some crystals of potassium chlorate in a dry mortar ; dry the powder by pressing , not ...
... occurs when magnesium , or iron , is burnt , also consists in combination of the magnesium , or iron , with oxygen in the air . Exp . 4. Powder some crystals of potassium chlorate in a dry mortar ; dry the powder by pressing , not ...
Page 10
... occurs ; cool ; counterpoise again . A new kind of matter different from , and weighing more than , the original cuprous oxide , has been produced . This new kind of matter is called cupric oxide . In Exps . 1 , 2 , and 3 you changed ...
... occurs ; cool ; counterpoise again . A new kind of matter different from , and weighing more than , the original cuprous oxide , has been produced . This new kind of matter is called cupric oxide . In Exps . 1 , 2 , and 3 you changed ...
Page 12
... occurs . Separate the liquid from the solid by filtration , and evaporate the filtrate to dryness ; no solid remains ; therefore none of the copper oxide dissolved in the warm water . Place a little yellow potassium chromate in water ...
... occurs . Separate the liquid from the solid by filtration , and evaporate the filtrate to dryness ; no solid remains ; therefore none of the copper oxide dissolved in the warm water . Place a little yellow potassium chromate in water ...
Page 19
... occurs . Warm the contents of the tube ; chemical change soon begins . How do you know that the change which occurs is chemical ? Exp . 6. Put a small piece of charcoal with some potas- sium chlorate in a dry test tube ; no change occurs ...
... occurs . Warm the contents of the tube ; chemical change soon begins . How do you know that the change which occurs is chemical ? Exp . 6. Put a small piece of charcoal with some potas- sium chlorate in a dry test tube ; no change occurs ...
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Common terms and phrases
acetic acid alcohol alkali allow to cool ammonia ammonium carbamate ammonium chloride apparatus aqueous solution atomic weight barium barium oxide basin beaker boiling bottle bulb Bunsen-lamp calcium carbamate carbon dioxide Chap chemical change chromium trioxide colour combined composition compound concentrated sulphuric acid copper sulphate cork Crown 8vo crucible crystallising crystals decomposed determine dilute sulphuric acid dissolve drop ELEMENTARY CHEMISTRY elements equivalent evaporate evolved exit tube experiments ferric chloride ferrous sulphate filter filtrate flask grams H₂O hard glass heat hydriodic acid hydrochloric acid hydrogen hydroxide interact iodide iodine iron liquid litmus magnesium mass mercury metal mixture nitric acid nitrogen obtained oxalic acid oxide oxidised oxygen pass permanganate phosphorus platinum potassium potassium chlorate prepared produced prove pure ratio reacting weight reaction salt shew shewn in Fig solid specific gravity sulphocyanide sulphuric acid temperature vapour warm wash weight of oxygen zinc
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