J. Thomson showed thatnegative charges could be made to move from one end of a cathode ray tube toanother, causing the tube to glow. Because of this, Thomson is credited withthe discovery of the electron. Based on this information, which part ofDaltons atomic theory conflicted with Thomsons...
a highly corrosive, colorless, transparent, and easily flowing liquid. It is toxic and can cause strong irritation to the respiratory system and skin. It is hygroscopic and forms smoke in the air, reacting violently with water to produce aminosulfonic acid, hydrogen chloride, and carbon dioxide....
Extreme caution should be exercised in all cases of oral steroid use. The prolonged use of steroids (30 days or more) can increase the risk ofsepsis,thromboembolism, and bone fracture.6It can also cause a "rebound effect" in which symptoms will re-emerge violently once the treatment is stop...
The numbers provided below were developed informally for illustration purposes. But rest assured that with a complex sophisticated computer model relying on a host of inputs, we could tweak the parameters to arrive at essentially the same results presented below. Scenario A represents the forked futu...
provocation /ˌprɒvəˈkeɪʃən/ |TEM4N-VAR If you describe a person's action as provocation or a provocation, you mean that it is a reason for someone else to react angrily, violently, or emotionally. 挑衅• He denies murder on the grounds of provocation. 他以受到了挑衅...
Science Gizmo – Ions & Ionic Bonding Name ___ Computer (Number & Letter) ___ Period ___ Date Monday, 3 / 31 / 08 Student Exploration Guide: Ionic Bonds Sodium is a soft, silvery metal that reacts violently with water and air. Chlorine is a poisonous gas used to kill bacteria in ...
With no gravity(引力), it’s just as easy to pedal(踩踏板)violently. You can watch a movie while you pedal by floating a microcomputer anywhere you want. But station residents have to be careful about staying in one place too long. Without gravity to help circulate air, the carbon ...
As is mentioned in Time, when water is exposed to the air for 12 hours, carbon dioxide interacts with the H2O in the water, and the pH value lowers slightly. As a result, the water has a different taste. “But it’s most likely safe to drink,” Norwegian expert Truls Krogh told Sci...
Silicon-based life can’t survive on Earth anyway. Silicon is more reactive than carbon and can form long ‘chains’ of molecules, reminiscent of hydrocarbons, but it will also react violently with oxygen at relatively low temperatures. This means that silicon chains or ‘silanes’ couldn’t ha...
The precursor is drawn into long strands or fibers and then heated to a very high temperature with-out allowing it to come in contact with oxygen. Without oxygen, the fiber cannot burn. Instead, the high temperature causes the atoms in the fiber to vibrate violently until most of the non-...