Journal of Chemical Education
By Vrabec, Michal and Prokša, Miroslav
“Identifying Misconceptions Related to Chemical Bonding Concepts in the Slovak School System Using the Bonding Representations Inventory as a Diagnostic Tool”
Publisher:
93
Pp. 1364-1370
2016
Identifying Misconceptions Related to Chemical Bonding Concepts in the Slovak School System Using the Bonding Representations Inventory as a Diagnostic Tool
Type: Empirical
Data collection method: Test
Number of subjects, range: Large — 31 or more
Grade and age of subjects: 9th-12 grade — 15-18 years
Covalent bonding
- Covalent bonds have very different electronegativity.
- There is a transfer of electrons in covalent bonding.
- The covalent bond forms between two electrons.
- The covalent bonding is formed based on octet rule.
Ionic bonding
- Formation of shared electron pair in ionic compounds Cl− gives its electron to the sodium atom in NaCl.
- Ionic bonding is formed based on the octet rule.
- NaCl is a molecule .
- The molecules of NaCl form the NaCl structure.
- The atoms of Na and Cl attract each other and form NaCl.
Symbolic level
- Spacing of dots between atoms indicates equal sharing.
- Similar spacing indicates same bond type.
- Dots represent all the electrons in the compound.
Microscopic level
- Choosing ionic bonding on a picture representing shared electron pair.
- Bond type depends on atoms being labeled.
- Bond type cannot be determined without ± showing.
Other
- Inability to classify as metals/ nonmetals.
- Chlorine has smaller electronegativity than carbon.
- Slightly different electronegativities mean equal sharing.
- Transfer of electrons is more accurate than attractions.
- Cations get rid of electrons to become stable.