First Lessons in Inorganic Chemistry. [With] Solutions of Questions

First Lessons in Inorganic Chemistry. [With] Solutions of Questions

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 edition. Excerpt: ...Proportions. If two elements, A and B, unite together in more proportions than one, on comparing together quantities of the different compounds, each of which contains the same amount of A, the quantities of B will bear a very simple relation to each other. Par. 26. 3. Equivalent Proportions. Each elementary substance in combining with other elements, or in displacing others from their combinations, does so in a fixed proportion, which may be represented numerically. Par. 28. PROPERTIES OF METALS. 149 THE METALS. LESSON XVI. Properties Of Metals. Quantivalence. Types. Crystallisation. Specific Heat. 115. Properties of Metals. In the list of elements previously given, they are distinguished as metals and metalloids. Although this distinction is generally made, the difference between some of each class is not so striking as might be supposed. For example, potassium and sodium have neither the hardness nor high specific gravity of metals generally. Like phosphorus, they are soft, and readily oxidise in the air: their specific gravity is less than that of water, and only about half that of phosphorus. The following are the properties by which metals are for the most part characterised: --1. A peculiar brightness when polished, known as metallic lustre. 2. With the exception of copper and gold, the metals have generally a greyish colour, in most cases approaching the whiteness of silver, and in others the blue tint of lead. 3. Another property is that of malleability, or extension when hammered. Gold and silver may be beaten out to an amazing extent. For example, gold may be so extended that a square foot only weighs three grains. 4. Ductility is another characteristic. Most of the metals admit of being drawn out into wire. Iron, platinum, gold, .show more

Product details

  • Paperback | 76 pages
  • 189 x 246 x 4mm | 154g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236635531
  • 9781236635532