Frases sobre ''Chemical''
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Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).
Autor: Dmitri MendeleevValue , Same , Either , Chemical
As is known, the sugar molecule as it passes through lactic acid can easily be split by purely chemical means.
Autor: Eduard BuchnerThrough , Acid , Chemical , Sugar
I got my undergraduate degree in chemical engineering.
Autor: Leroy ChiaoGot , Engineering , Degree , Chemical
I was a Dow Chemical baby. My dad designed chemical plants for Dow Chemical.
Autor: Mike DeanDad , Plants , Baby , Chemical
The instruments, glassware, and chemical reagents necessary for my project were the same as my 19th-century predecessors had.
Autor: Rita Levi-MontalciniProject , Were , Same , Chemical
Catalysts offer the promise of making chemical transformations far less polluting.
Autor: Robert H. GrubbsPromise , Far , Offer , Chemical
Even when they are saturated in the sense of the older theory of valence, the elementary atoms still possess sufficient chemical affinity to bind other seemingly also saturated atoms and groups of atoms, under generation of clearly defined atomic bonds.
Autor: Alfred WernerSense , Theory , Generation , Chemical
It has long been known that the chemical atomic weight of hydrogen was greater than one-quarter of that of helium, but so long as fractional weights were general there was no particular need to explain this fact, nor could any definite conclusions be drawn from it.
Autor: Francis William AstonNeed , Long , Explain , Chemical
Thus at the beginning of 1906 it seemed to be established that the emitters of the spectral series of chemical elements are their positive atomic ions.
Autor: Johannes StarkBeginning , Positive , Elements , Chemical
The physiologist who succeeds in penetrating deeper and deeper into the digestive canal becomes convinced that it consists of a number of chemical laboratories equipped with various mechanical devices.
Autor: Ivan PavlovWho , Number , Chemical , Mechanical
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