Assessment of knowledge on chemical periodicity in a distance-learning general chemistry class

Química Nova

Medeiros, Miguel de Araújo¹  Universidade Federal do Tocantins, Porto Nacional, Brasil¹ 

关键词: periodic properties;    chemical periodicity;    distance learning.;   

DOI  :  10.1590/S0100-40422013000300019

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work describes the software Quiptabela, suggests a teaching activity, and analyses responses of general chemistry students from the Biological Sciences distance course at the Federal University of Tocantins. The software was described according to its educational potential, featuring the creation of dozens of charts or tables correlating physicochemical properties of the elements, being Brazilian, and free distribution. The teaching activities suggested analyzed students' ability to create and analyze tables and charts correlating the properties of chemical elements. Some 41% of students tested could define the term "periodic", but failed to use the concept to explain and differentiate changes in mass or atomic radius with the atomic number of elements.

【 授权许可】

Unknown