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Chemistry Concepts and Lab Experiments |
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Ammonia fountain "Ammonia is a colorless gas with a peculiar odor, lighter than air, and exceedingly soluble in water...The great solubility of this gas is strikingly shown by the 'ammonia fountain.' A flask is filled... |
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Archimedes Principle "States that: A body when immersed in a fluid loses exactly as much of its weight as is equal to the weight of the dluid it displaces; or: A fluid sustains as mch of the weight of a body immersed in i... |
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Archimedies principle "From one end of a scale-beam, suspend a cylindrical metal bucket, b, with a solid cylinder, a, that fits accurately into it hanging below. Conterpoise with weights (shot or sand) in the opposite scal... |
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Archimedies principle "It is evident that, when a solid is immersed in a fluid, it will displace exactly its own volume of the fluid. Immerse a solid cube one centimeter on each edge in water, so that its upper face shall ... |
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Atmospheric Pressure "The pressure of the atmosphere may be easily shown by the tube and piston. suppose there is an orifice to be opened or closed by the valve b, as the piston a is moved up or down in its barrel. The ... |
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Barometer, partial pressure "The degree to which the air has been exhausted from a closed vessel in which there is a partial vacuum is measured by the height to which a mercurial column in a vertical tube, whose top is connected... |
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Bunsen Burner "...gas lighted above an iron gauze (a, Fig. 11) does not catch fire below the gauze because the heat of the flame is conducted away by the iron." -Brownlee 1907... |
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Capillary Attraction "b is a glass tube in water and c is a glass tube in mercury. The surface of the water in the tube b is concave, while the surface of the mercury in the tube c is convex." — Hallock, 1905... |
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Chlorine Bleaching Diagrammatic representation of bleaching.... |
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Combinational Volume "Suppose our volume of hydrogen to unite with the volume of chlorine; if one particle of hydrogen combines with one particle of chlorine, it is evident that we should have four pairs; that is four par... |
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Combinational Volume "When one volume of hydrogen actually unites with one volume of chlorine, two volumes and not one volume of hydrogen chloride result. the volume of the acid is twice that of the hydrogen. Each of thes... |
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Currents, opposite "Suppose a b c to represent a portion of the earth's surface a being towards the north pole, c towards the south pole...The currents of air are supposed to pass in the direction of the arrows. the win... |
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Distilation "Partly fill with strong brine a Florence glask the cork of which carries a delivery-tube and a thermometer. Pass the delivery-tube through a 'water jacket,' J, kept cool substantially as shown. Heat ... |
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Electrolysis "If the two wires from a battery be placed in pure water, it will be foud tat practically no current passes...If a small quantity of sulphuric acid is added to the water, the solution is a good conduc... |
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Expansion of Solids "The expansion of solids by heat is clearly shown by the following experiment: m represents a ring of metal, through which, at the ordinary temperature, a small iron or copper ball, a, will pass freel... |
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Flames, Reducing and Oxidizing "The reducing flame (as of a blowpipe) is that part of the flame which is deficient in oxygen for combustion (RF in figure), and which has therefore a reducing effect, or, n other words, tends to depr... |
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Foutain in vacuo "Draw out a piece of glass tubing to a jet, and push it through a perforation in a cork that snugly fits a bottle. Slip a short piece of snugly fitting rubber tubing over the outer end of the glass tu... |
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Gas Density This illustration shows gas with a heavier density then air collecting at the bottom of a beaker.... |
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Gases, mixing "Invert the second vessel over the first, mouth to mouth, so that the contents of the two vessels shall be separated only by the paper. Each vessel is filled with an invisible gas. Remove the paper, a... |
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Heat transference "Place a bar of iron and a similar one of copper end to end so as to be heated equally by the flame of a lamp. Fasten small balls by wax to the under surfaces of the bars at eqiual distances apart. Mo... |
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Heated Metal This illustration shows a chemistry experiment where metal is heated to an extreme temperature.... |
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Hydrogen Weight This illustration shows a test to show the proportions of weight between hydrogen and oxygen.... |
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Joule's Experiment "Joule's experiment on the mechanical equivalent of heat, in which he caused paddlewheels to rotate in a vessel of water by means of falling weights W." -Hawkins, 1917... |
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Liquid Air Boiling on a Block of Ice "Liquid air is air reduced to a liquid form. Liquid air when pure has a bluish tinge, but the liquid form of ordinary air has a somewhat cloudy appearance owing to the presence of solid carbon dioxide... |
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Magdeburg hemispheres "Grease the edges to make more sure of a tight joint, fit the hemispheres to each other, and exhaust the air with a pump. Close the stopcock, remove the hemispheres from the pump, attach the second ha... |
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