When is a molecule polar? Change the electronegativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity.
This ILS refer on the environmental problem of global climate change.Students study and learn for causes, consequences and ways to address the problem.They could also take a role of scientist and investigate climate change by different aspects.... read more
Since Bohr discovered the relationship between optical spectra and the structure of atoms, spectrometry has served an important role in physics and chemistry. As spectrometers are expensive and accurate calibration is necessary to...Read more
Polymers are large molecules called macromolecules.They are formed by linking repeated small molecules: monomersThe result is very long and very diverse forms chains.Synthetic polymers are obtained in the laboratory or in industry. Examples of... read more