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Chemistry Test

Chapter 6 - Chemical Bonding

QuestionAnswer
As atoms bond with each other, they decrease their potential energy, thus creating more-stable arrangements of matter
The electrons involved in the formation of a chemical are called valence electrons
If two covalently bonded atoms are identical, the bond is nonpolar covalent
If atoms that share electrons have an unequal attraction for the electrons, the bond is called polar
The greater the electronegativity difference between two bonded atoms, the greater the percentage of ____ in the bond. ionic character
Which of the following is not a diatomic element sulfur
Which of the following is not a reason that some elements only exist as diatomic molecules in their pure form. they are higher in potential energy as diatomic elements
In drawing a Lewis structure, most nonmetal atoms other than hydrogen should be surrounded by 8 electrons
Multiple covalent bonds may occur in atoms that contain carbon, nitrogen, or oxygen
In metallic bonds, the mobile electrons surrounding the positive ions are called a(n) electron sea
Malleability and ductility are characteristic of substances with metallic bonds
To appear shiny, a material must be able to absorb and re-emit light of many wavelengths
VSEPR theory is a model for predicting the shape of molecules
The concept that electrostatic repulsion between electron pairs surrounding an atom causes these pairs to be separated as far as possible is the foundation of VSEPR theory
A polar molecule contains a region of positive charge and a region of negative charge
According to VSEPR theory, the structure of the ammonia molecule, NH₃, is trigonal-pyramidal
Use VSEPR theory to predict the shape of the carbon tetraiodide molecule, CI₄. tetrahedral
According to VSEPR theory, the shape of an H₂O molecule is bent
Created by: roquewan
 

 



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