Practical Chemistry: A Course of Laboratory Work |
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Page 4
... warm water in a beaker : then evaporate the liquid to dryness on a water- bath . Notice the bubbles of air which rise to the surface of the water during solution ; this air was imprisoned in the pores of the sugar , and as the solid ...
... warm water in a beaker : then evaporate the liquid to dryness on a water- bath . Notice the bubbles of air which rise to the surface of the water during solution ; this air was imprisoned in the pores of the sugar , and as the solid ...
Page 11
... warm by placing the tubes in hot water . The sulphur slowly dissolves ; the iron is unchanged . To prove that sulphur has dissolved , filter , and evaporate off the carbon disulphide by placing the liquid in a watch - glass on a water ...
... warm by placing the tubes in hot water . The sulphur slowly dissolves ; the iron is unchanged . To prove that sulphur has dissolved , filter , and evaporate off the carbon disulphide by placing the liquid in a watch - glass on a water ...
Page 12
... warm water . Place a little yellow potassium chromate in water , and warm ; the yellow solid dissolves , forming a yellow coloured liquid . Evaporate this to dryness ; the original yellow po- tassium chromate remains . Make a mixture of ...
... warm water . Place a little yellow potassium chromate in water , and warm ; the yellow solid dissolves , forming a yellow coloured liquid . Evaporate this to dryness ; the original yellow po- tassium chromate remains . Make a mixture of ...
Page 13
... warm until a part of the copper has dissolved in the acid ; pour off the blue coloured liquid into a basin ; evaporate the liquid , in the draught cupboard , nearly but not quite to dryness ; allow to cool . A blue , crystalline , solid ...
... warm until a part of the copper has dissolved in the acid ; pour off the blue coloured liquid into a basin ; evaporate the liquid , in the draught cupboard , nearly but not quite to dryness ; allow to cool . A blue , crystalline , solid ...
Page 19
... 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 . Heat ...
... 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 . Heat ...
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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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