کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1183842 963285 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Una reconceptualización del concepto de elemento como base para una nueva representación del sistema periódico
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Una reconceptualización del concepto de elemento como base para una nueva representación del sistema periódico
چکیده انگلیسی

The aim of this paper is to propose a new conceptualization of the term ‘element’ as the basis for a new representation of the periodic system. For this purpose we begin by recalling the dual sense of the concept of element. Next, we develop the ‘limits isotopes’ argument which is the basis of the new periodic chart. This task leads us both to reconceptualize the notion of element and to characterize the term ‘basic substance’. In turn, the argument is used to face the epistemological problem with hydrogen and helium in the periodic table. Finally, the Döbereiner's triads are used to calculate atomic masses in three periodic charts: the medium-long-form, the modified ‘left-step’ proposed by Scerri, and the proposed in this work. Evaluation results allows us to stand out the fruitful predictive power of our periodic system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Educación Química - Volume 24, Issue 1, January 2013, Pages 63–70
نویسندگان
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