lekaje2375
05.07.2019 •
Chemistry
John daltons atomic theory is considered to be the first truly scientific theory of the atom. what aspect of daltons research was missing from the early theories? a) experimentation and examination of the results b) effective technology in the form of microscopes c) appropriate mathematical formulas for testing d) a community of scientist capable of reviewing his work
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Ответ:
A) experimentation and examination of the results
Explanation:
From a historical and philosophical point of view, Dalton is considered the father of atomic theories. For over 20 centuries no one has manipulated the concept of atom. He had the audacity and the courage to manipulate these theories to try to explain what atoms would be by experimenting and analyzing the results.
For Dalton, matter was discontinuous, that is, between the atoms that compose it there would be empty spaces. Although considered theoretic behind the proposition of this model, Dalton considered relevant information from other studies (Proust's weighted laws; Lavoisier and the element conception; gases and their laws etc.), which allowed his model to explain the phenomena even then discussed. This is the "asset" of his atomic model, for though it presents clear constraints on today's science, for his contemporaries, this model satisfied many behaviors that continuous matter was unable to even predict.
Dalton's ideas were considered appropriate because of his effort to link theoretical postulates with scientifically obtained data through experimentation. This fact corroborated the acceptance of his model by the scientists of the time, making Dalton enter the history of chemistry and humanity.
Ответ:
in the first balloon when the balloon get warm the molecules begin to distribute to the wall of the balloon and the balloon will brust because of the tension caused.
In the second case when the bLlon get cold the molecules Will atract each other then the balloon will contract because of the attraction of the molecules in the balloon.