24 Questions
Which factor is the best guide to determine the covalent or ionic character of a bond?
Electronegativity difference between the atoms involved
What type of bond is generally formed between two nonmetals?
Covalent bond
Which atoms are held together by polar covalent bonds in polyatomic ions?
Atoms sharing electrons unequally
In potassium nitrate (KNO3), which type of bond exists between K+ and NO3− ions?
Ionic bond
Which of the following bonds would have the highest polarity based on the electronegativity values provided?
Si–O
In amino acids, which bond has the highest polarity?
O–H
What type of compound is formed when polyatomic ions combine with ions of opposite charge?
Ionic compound
'Silicones' are polymeric compounds containing which types of covalent bonds among others?
Si–O, Si–C, C–H, and H–H
What kind of bond is expected between S and H in a covalent compound?
Nonpolar Covalent Bond
What role do bond polarities play in determining protein structure?
Determining protein shape and stability
Arrange the following covalent bonds found in amino acids in order of increasing polarity: C–H, C–N, C–O, N–H, O–H.
C–H, S–H, C–N, N–H, C–O
In potassium nitrate (KNO3), what type of bonding exists between the K+ cation and the NO3− anion?
Ionic
What types of covalent bonds are present in silicones, arranged in order of increasing polarity: Si–O, Si–C, C–H, C–C?
C–C, C–H, Si–C, Si–O
What are the atoms designated as δ+ and δ– in the bond C–O?
Cδ+−Oδ−
Explain the role of bond polarities in determining the structure of proteins.
Bond polarities play an important role in determining the structure of proteins by influencing the interactions between different amino acids.
Which bond in amino acids has the highest electronegativity difference?
N–H
In silicones, which covalent bond has the highest polarity?
Si–O
What is the role of bond polarities in determining the structure of proteins?
Controlling protein folding
What is the electronegativity difference between C and O in the bond C–O?
1.0
Which type of compound is formed when polyatomic ions combine with ions of opposite charge?
Ionic compound
What factor is the best guide to determine the covalent or ionic character of a bond?
Electronegativity difference
Between which two atoms do silicones typically have the lowest polarity bond?
C–C
In potassium nitrate (KNO3), which type of bonding exists between the nitrogen and oxygen atoms in NO3−?
Covalent bonding
What determines the structure of proteins?
Bond polarities
Learn about how the distribution of electrons varies in a covalent bond between hydrogen and chlorine atoms. Understand why the chlorine atom carries a partial negative charge while the hydrogen atom has a partial positive charge in an HCl molecule.
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