Results 31 to 40 of about 1,114,043 (348)

Evaluation of the periodic table as a teaching tool and content for conceptual change in chemical processes

open access: yesJournal of Science and Education, 2023
This study focused on two crucial chemistry concepts, chemical bonding and related reactions. It explored how learners may conceptually use the periodic table in their scientific understanding.
Thabo Mhlongo, Thomas Dipogiso Sedumedi
doaj   +1 more source

Effect of Concept Mapping Teaching Approach on Students’ Academic Performance in Chemistry in Senior Secondary Schools

open access: yesIndonesian Journal of Educational Research and Technology, 2023
This study investigated the effect of the concept mapping teaching approach on students’ performance in Chemistry in senior secondary schools regarding a periodic table concept.
Torpev Terver Francis   +1 more
doaj   +1 more source

The Use of Educational Board Game as a Supplemental Tool in Learning Periodic Table of Elements Among Senior High School Students

open access: yesAmerican Journal of Education and Technology, 2023
This study aims to assess the effectiveness of the created educational board game as a supplemental tool in learning the core concepts of the periodic table of elements. A quasi-experimental approach was utilized in addressing the objectives of the study
Lalaine N Alejandria   +3 more
semanticscholar   +1 more source

Comparison of Hartree Factor and Density Function Theory in Calculating Coating Constants and NMR Parameters of Chromate and Molecular Complexes with Alanine and Glycine [PDF]

open access: yesInternational Journal of New Chemistry, 2017
Chromium and molybdenum are intermediate elements of a periodic table group, both of which are both low but essential in nutrition because they play a key role in the metabolism of the chemical activity of the body.
Vinod Nguyen
doaj   +1 more source

Bonding, structure, and mechanical stability of 2D materials: the predictive power of the periodic table.

open access: yesNanoscale Horizons, 2021
This tutorial review describes the ongoing effort to convert main-group elements of the periodic table and their combinations into stable 2D materials, which is sometimes called modern 'alchemy'.
P. Hess
semanticscholar   +1 more source

The generalized Lindemann melting coefficient [PDF]

open access: yes, 2020
Lindemann developed the melting temperature theory over 100 years ago, known as the Lindemann criterion. Its main assumption is that melting occurs when the root-mean-square vibration amplitude of ions and atoms in crystals exceeds a critical fraction, h
Hepburn, Ian   +2 more
core   +3 more sources

Dynamical stability of two-dimensional metals in the periodic table [PDF]

open access: yesPhysical review B, 2020
We study the dynamical stability of two-dimensional (2D) metals from Li to Pb in the periodic table. Using a first-principles approach, we calculate the phonon band structure of 2D metals that have planar hexagonal (HX), buckled honeycomb (bHC), and ...
S. Ono
semanticscholar   +1 more source

Atomic descriptors generated from coordination polyhedra in crystal structures

open access: yesScience and Technology of Advanced Materials: Methods, 2021
We developed atomic descriptors from local crystal structures, which will facilitate researchers’ use of machine learning to predict the properties of inorganic materials via materials informatics.
Yuki Inada   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy