Molecular Polarity PhET Lab
Molecule Polarity PhET Lab
A study of electronegativity, bond polarity, and molecular polarity
Introduction:
In this atomic-level simulation, you will investigate how atoms' electronegativity value affects the bonds they produce. When two atoms bond, a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom's ability to hoard electrons shared in that bond. In this lab you will work diligently, at your own pace, to answer a number of questions. To begin, from what you've already learned about the protons and electrons in an atom, what would cause an atom to have a high electronegativity value? _______________________________________________________________________
Why might an atom have a low electronegativity value?
_______________________________________________________________________
Procedure:
Turn on (check) all view options. GRAB and spin the molecule with your mouse.
Take your time and investigate how the binary compound's bond behaves when the atom's electronegativity and orientation are changed. Do not rush through this step.
Describe the bond formed between two atoms with similar, low electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with similar, high electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with very different electronegativities.
_____________________________________________________________________
Describe (in your own words) what is meant by partial charges, δ- and δ+. ________________________________ δ- represents: _________________________________________________________________________________ δ+ represents: _________________________________________________________________________________
What happens when the electric field is applied to a very polar molecule? ________________________________
Why do you think this is?
A study of electronegativity, bond polarity, and molecular polarity
Introduction:
In this atomic-level simulation, you will investigate how atoms' electronegativity value affects the bonds they produce. When two atoms bond, a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom's ability to hoard electrons shared in that bond. In this lab you will work diligently, at your own pace, to answer a number of questions. To begin, from what you've already learned about the protons and electrons in an atom, what would cause an atom to have a high electronegativity value? _______________________________________________________________________
Why might an atom have a low electronegativity value?
_______________________________________________________________________
Procedure:
Turn on (check) all view options. GRAB and spin the molecule with your mouse.
Take your time and investigate how the binary compound's bond behaves when the atom's electronegativity and orientation are changed. Do not rush through this step.
Describe the bond formed between two atoms with similar, low electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with similar, high electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with very different electronegativities.
_____________________________________________________________________
Describe (in your own words) what is meant by partial charges, δ- and δ+. ________________________________ δ- represents: _________________________________________________________________________________ δ+ represents: _________________________________________________________________________________
What happens when the electric field is applied to a very polar molecule? ________________________________
Why do you think this is?