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  1. ... or clean minor cuts or abrasions. Isopropyl rubbing alcohol can also be supplied in a 99% concentration. This product is used to harden skin such as...

    分類:科學及數學 > 化學 2006年11月04日

  2. ... / alkanols like methanol, ethanol (drinking alcohol) and propan-2-ol ( rubbing alcohol) are miscible in water.

    分類:科學及數學 > 化學 2010年10月20日

  3. ...to snap, can be made into other colours, powders come off when rubbed , used to write on blackboard Marble: A strong, smooth type stone, used to put in fish tank. Sand: Very small and feel like salt Slate: rough...

    分類:科學及數學 > 化學 2006年11月08日

  4. ... in flat hexagonal lattices, which are then layered in sheets, each sheet can be easily rubbed off as they can then become good lubricant. on the other hand, in diamond, the carbon ...

    分類:科學及數學 > 化學 2008年04月12日

  5. ...methane, ethane or propane, due to the smaller molecular size, they are present in form of gas. Natural gas is usually used as a fuel. For...

    分類:科學及數學 > 化學 2008年05月14日

  6. ...fish. It has also been used to disinfect wounds. In medieval times salt would be rubbed into household surfaces as a cleansing agent.

    分類:科學及數學 > 化學 2007年01月30日

  7. ...this SLIDING properties, Graphite is used in pencil, as you rub the Graphite rod (macromolecule) across the paper, sheets of hexagons...

    分類:科學及數學 > 化學 2007年12月13日

  8. ... the waves oscillate back and forth in the oven, the particles in the food oscillate and rub against each other. This creates friction inside the food. This...

    分類:科學及數學 > 化學 2007年10月17日

  9. ... together.microscopic particles of glass are held in the clothing and rubbed against the skin causeing abrasion scars that go undiaognosed at the doctors...

    分類:科學及數學 > 化學 2006年10月21日

  10. ... is 1. The acidic solution is rubbed against the rust slightly. For example, use a towel to dip... iron should be TOTALLY IMMERSED in an acidic solution for a long time for rust to occur. So...

    分類:科學及數學 > 化學 2007年01月19日