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iRubric: Chemical Bonds rubric

iRubric: Chemical Bonds rubric

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Chemical Bonds 
Chemical Bonds
Rubric Code: LX7A5XC
By Parmeet
Ready to use
Public Rubric
Subject: Chemistry  
Type: Quiz  
Grade Levels: 6-8, 9-12, Undergraduate

Powered by iRubric Chemical Bonds
  Fair

Student understands the very basic concepts of chemical bonds

1 pts

Good

Student has enough understanding of the concepts of chemical bonds that he/she could answer basic to some upper level questions

2 pts

High

Student has a firm grasp of the chemical bonding concept. Student will be able to solve basic questions and most advanced questions about chemical bonds

3 pts

Ionic Bonds

An ionic bond forms when ion(s) in the outer ring of an atom bond with the outer ring of another atom that has enough space to accept the(se) electrons. Most atoms being studied in this chapter can complete their outer ring with 8 electrons.
Fair

Student knows the basic concept that an ion is in the outer ring of an atom and has some knowledge of the bonding concept, but would have difficulty drawing an electron dot diagram of an atom let alone an ionic bond of two atoms. Student would be confused at times with the difference between ionic and covalent bonds
Good

Student understands that the ions in an atom's outer ring will bond with other atoms. The student probably could draw correct electron dot diagrams 60% of the time of individual atoms. Student might confuse an ionic bond for a covalent bond and would struggle on drawing bonding of two atoms by electron dot diagram.
High

Student has a very good understanding of the ion structures in the outer rings of atoms; would be able to look at a periodic table and figure out how many electrons are in each atom's outer ring; students would be capable of drawing electron dot diagrams and illustrate ionic bonds between two atoms
Covalent Bonds

A covalent bond forms when two isolated atoms merge their ions into a combined bonding orbital and in this bond the electrons are shared.
Fair

Student knows the basic concept that an ion is in the outer ring of an atom and has some knowledge of the bonding concept, but would have difficulty drawing an electron dot diagram of an atom let alone an covalent bond of two atoms. Student would be confused at times with the difference between ionic and covalent bonds
Good

Student understands that the ions in an atom's outer ring will bond with other atoms. The student probably could draw correct electron dot diagrams 60% of the time of individual atoms. Student might confuse a covalent bond for an ionic bond and would struggle on drawing bonding of two atoms by electron dot diagram.
High

Student has a very good understanding of the ion structures in the outer rings of atoms; would be able to look at a periodic table and figure out how many electrons are in each atom's outer ring; students would be capable of drawing electron dot diagrams and illustrate a covalent bond between two atoms
Polar Bonds

Polar bonds are covalent bonds that occur when two atoms bond and share electrons, but one end of the bond will have a greater share of the electrons and have a slight negative charge and the other end will have a smaller share of the electrons and thus will have a slight positive charge
Fair

Student has the basic knowledge of ionic vs covalent bonds but would have difficulty grasping the slight positive/negative charges
Good

Student has understanding of the difference between ionic and covalent bonds and understands the comparison of polar covalent bonds being like a tug of war, but the students may only grasp the labeling of these bonds 50% of the time
High

Student has a good understanding of the difference between ionic and covalent bonds and understands the comparison of polar covalent bonds being like a tug of war and the students can grasp the labeling of these bonds 85% of the time
NonPolar Bonds

Nonpolar bonds are covalent bonds that occur when two identical atoms bond and share electrons equally
Fair

Student has the basic knowledge of ionic vs covalent bonds but would have difficulty grasping the difference between bonds with slight positive/negative charges and bonds between identical atoms
Good

Student has understanding of the difference between ionic and covalent bonds and understands the comparison of polar covalent bonds being like a tug of war, but the students may only grasp the labeling of these bonds 50% of the time
High

Student has a good understanding of the difference between ionic and covalent bonds and understands the comparison of polar covalent bonds being like a tug of war and the students can grasp the labeling of these bonds 85% of the time




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