The International Years, proclaimed by the General Assembly of the United Nations, are intended to increase awareness of the general public about topics and events that became milestones in the development of the society, and to motivate the new generations to pursue in the actions to enrich science and culture. The International Year of Physics (2005), Astronomy (2009), Chemistry (2011), Crystallography (2014) and Light (2015), are magnificent examples of these celebrations. This year has been proclaimed as the International Year of the Periodic Table of the Elements (IYPT 2019), in commemoration of the sesquicentennial of its formal presentation in 1869 by Dmitri Mendeleev, which will bring the opportunity to show it everywhere, so that it become a conversation subject and inspire young people to get involved in this science that is applicable every day in chemical reactions for agriculture, medicine, biology, and renewable energies, among others. Chemical reactions usually require heating, and then studying methods to heat has been always an issue, from wood fire, the Bunsen burner to the use of microwave energy. Microwave chemistry is a proof of the popularity of this method for applying energy to chemical systems, as well as the curiosity to study its effects on the reactions. Therefore, regardless our interest in the foundations of technologies based on electromagnetic waves, we must be aware of the importance chemistry. The periodic table of the chemical elements is one of the most recognizable charts even by non-chemist people, but few years earlier to the discovering of the periodical pattern in the properties of the elements and their atomic numbers by Dmitri Mendeleev, often atoms and molecules were considered as synonymous, nomenclature of the compounds was not uniform, i.e. water was reported with two chemical formulas and acetic acid with nineteen, and Avogadro’s theory and diatomic molecules were questionable. Therefore, most chemists found necessary to establish certain rules and foundations that allow to move forward on the new theories in chemistry. It was necessary to create the frame that explained the reported results so far, without contradictions nor exceptions. The quote “A chemist that is not a physics is nothing at all” has been attributed to Robert Bunsen referring to the proposal of a separated branch of the chemistry devoted to find general laws of the chemical phenomena as in physics. August Kekul e had the idea of organizing a meeting to discuss those issues with other chemists to reach a conclusion, or at least a sort of consensus. He contacted Karl Weltzien, a chemist in Karlsruhe that had a well-established reputation at that time, and Adolphe Wurtz, so that they organized the First Congress of Chemists that was held in Karlsruhe on September 3-5, 1860. They attracted the most notorious

中文翻译：

---

编者按：全球会议和化学元素周期表国际年

联合国大会宣布的国际年旨在提高公众对成为社会发展里程碑的话题和事件的认识，并激励新一代人采取行动，丰富自己的生活。科学和文化。国际物理年（2005 年）、天文学年（2009 年）、化学年（2011 年）、晶体学年（2014 年）和光年（2015 年）都是这些庆祝活动的绝佳例子。今年已被宣布为国际元素周期表年（IYPT 2019），以纪念德米特里·门捷列夫 (Dmitri Mendeleev) 于 1869 年正式发表的第二百周年，这将带来在各处展示它的机会，使其成为一个话题，并激励年轻人参与到这门科学中，该科学每天都适用于农业、医学、生物学和可再生能源等领域的化学反应。化学反应通常需要加热，然后研究加热方法一直是一个问题，从木柴、本生灯到使用微波能量。微波化学证明了这种将能量应用于化学系统的方法的流行，以及研究其对反应影响的好奇心。因此，无论我们对基于电磁波的技术基础感兴趣，我们都必须意识到化学的重要性。即使是非化学家，化学元素周期表也是最容易识别的图表之一，但是在德米特里·门捷列夫发现元素性质及其原子序数的周期性模式的几年前，通常原子和分子被认为是同义词，化合物的命名并不统一，即水被报告有两个化学式和醋酸有十九个，阿伏伽德罗的理论和双原子分子是有问题的。因此，大多数化学家发现有必要建立某些规则和基础，以推动化学新理论的发展。有必要创建一个框架来解释迄今为止报告的结果，没有矛盾也没有例外。引用“不是物理学的化学家什么都不是”已经归因于罗伯特·本生，指的是化学的一个独立分支的提议，致力于寻找物理学中化学现象的一般规律。August Kekul e 想组织一次会议，与其他化学家讨论这些问题，以得出结论，或至少达成某种共识。他联系了当时在卡尔斯鲁厄享有盛誉的化学家卡尔·韦尔茨恩 (Karl Weltzien) 和阿道夫·伍尔茨 (Adolphe Wurtz)，让他们组织了 1860 年 9 月 3 日至 5 日在卡尔斯鲁厄举行的第一次化学家大会。臭名昭著