Presentation is loading. Please wait.

Presentation is loading. Please wait.

Section 12.1 Characteristics of Chemical Bonds 1.To understand the nature of bonds and their relationship to electronegativity 2.To understand bond polarity.

Published byRolf Stephens Modified over 8 years ago

Similar presentations

Presentation on theme: "Section 12.1 Characteristics of Chemical Bonds 1.To understand the nature of bonds and their relationship to electronegativity 2.To understand bond polarity."— Presentation transcript:

1 Section 12.1 Characteristics of Chemical Bonds 1.To understand the nature of bonds and their relationship to electronegativity 2.To understand bond polarity and how it is related to molecular polarity Objectives

2 Section 12.1 Characteristics of Chemical Bonds A. Types of Chemical Bonds Bond – force that holds groups of atoms together and makes them function as a unit Bond energy – energy required to break a chemical bond

3 Section 12.1 Characteristics of Chemical Bonds A. Types of Chemical Bonds: Non-metals + Non-metals A covalent bond results when electrons are shared by nuclei Covalent Bonding: Sharing Electrons

4 Section 12.1 Characteristics of Chemical Bonds A. Types of Chemical Bonds A polar covalent bond results when electrons are shared unequally by nuclei Covalent Bonding –One atom attracts the electrons more than the other atom

5 Section 12.1 Characteristics of Chemical Bonds B. Electronegativity Electronegativity – the relative ability of an atom in a molecule to attract shared electrons to itself –Quantitative scale –Follows the same trends as ionization energy –The higher an atom’s electronegativity value, the closer the shared electrons tend to be to that atom when it forms a bond.

6 Section 12.1 Characteristics of Chemical Bonds Electronegativity Property

7 Section 12.1 Characteristics of Chemical Bonds B. Electronegativity

8 Section 12.1 Characteristics of Chemical Bonds B. Electronegativity The polarity of a bond depends on the difference between the electronegativity values of the atoms forming the bond As a general rule, if the difference in EN values is > 2.0, then the bond is considered to be ionic.

9 Section 12.1 Characteristics of Chemical Bonds C. Bond Polarity and Dipole Moments A dipole moment results when a polar molecule has a center for positive charge separate from a center for negative charge

10 Section 12.1 Characteristics of Chemical Bonds C. Bond Polarity and Dipole Moments Water molecule dipole moment

11 Section 12.1 Characteristics of Chemical Bonds C. Bond Polarity and Dipole Moments The polarity of water affects its properties –Causes water to remain liquid at higher temperature –Permits ionic compounds to dissolve in it

Download ppt "Section 12.1 Characteristics of Chemical Bonds 1.To understand the nature of bonds and their relationship to electronegativity 2.To understand bond polarity."

Similar presentations

Periodic Trends.

Periodic Trends.
 Water molecule dipole moment.  The polarity of water affects its properties –Causes water to remain liquid at higher temperature –Permits ionic compounds.

 Water molecule dipole moment.  The polarity of water affects its properties –Causes water to remain liquid at higher temperature –Permits ionic compounds.
Ions Ion – Charged Atom Cation - positive charged atom Anion negative charged atom Charge equals the A group number.

Ions Ion – Charged Atom Cation - positive charged atom Anion negative charged atom Charge equals the A group number.
bond formed by the giving or Ionic Bond bond formed by the giving or taking of electrons.

bond formed by the giving or Ionic Bond bond formed by the giving or taking of electrons.
Properties of Bonds Polarity Bond Order Bond Length Bond Energy.

Properties of Bonds Polarity Bond Order Bond Length Bond Energy.
COVALENT BONDS Chapter 5 Section 3.

COVALENT BONDS Chapter 5 Section 3.
Polar Covalent Bonds. Polar bond - A type of covalent bond between two atoms in which electrons are shared unequally, resulting in a bond in which one.

Polar Covalent Bonds. Polar bond - A type of covalent bond between two atoms in which electrons are shared unequally, resulting in a bond in which one.
Polarity of Bonds Molecular Polarity. Equal Pull on Electrons If there is no difference in the electronegativity of the atoms forming a covalent bond,

Polarity of Bonds Molecular Polarity. Equal Pull on Electrons If there is no difference in the electronegativity of the atoms forming a covalent bond,
Covalent Bonding (Molecular Compounds) Subtitle. Properties of a Covalent Bond Formed when at least one pair of electrons are shared between non-metals.

Covalent Bonding (Molecular Compounds) Subtitle. Properties of a Covalent Bond Formed when at least one pair of electrons are shared between non-metals.
Molecular Compounds Unit 7. Covalent Bonds Sharing pairs of electrons Sharing pairs of electrons Covalent bonds are the intra-molecular attraction resulting.

Molecular Compounds Unit 7. Covalent Bonds Sharing pairs of electrons Sharing pairs of electrons Covalent bonds are the intra-molecular attraction resulting.
Covalent Bonds. Form when two or more non-metal atoms SHARE electrons. There is no transfer of electrons.

Covalent Bonds. Form when two or more non-metal atoms SHARE electrons. There is no transfer of electrons.
 A covalent bond is formed when two or more nuclei share electrons in order to achieve a stable electron configuration (noble gas).  Covalent bonds.

 A covalent bond is formed when two or more nuclei share electrons in order to achieve a stable electron configuration (noble gas).  Covalent bonds.
Molecular Interactions Polar and Non Polar Substances.

Molecular Interactions Polar and Non Polar Substances.
to the world of Chemical Bonding is the joining of atoms to form molecules and compounds Atoms bond to achieve a state of stability (stable outer shell.

to the world of Chemical Bonding is the joining of atoms to form molecules and compounds Atoms bond to achieve a state of stability (stable outer shell.
 The chemical bond formed when 2 atoms share electrons, usually between 2 nonmetals.

 The chemical bond formed when 2 atoms share electrons, usually between 2 nonmetals.
Chapter 6 Covalent Compounds Section 1 – Covalent Bonds Sharing Electrons You learned that electrons are rearranged when an ionic bond forms. When this.

Chapter 6 Covalent Compounds Section 1 – Covalent Bonds Sharing Electrons You learned that electrons are rearranged when an ionic bond forms. When this.
Inorganic Chemistry – Chemical Bonding. Chemical Bonding (1). When two or more atoms react ---  chemical bond – Valence electrons – Form Ionic bonds.

Inorganic Chemistry – Chemical Bonding. Chemical Bonding (1). When two or more atoms react ---  chemical bond – Valence electrons – Form Ionic bonds.
Section 12.1 Characteristics of Chemical Bonds 1.To learn about ionic and covalent bonds and explain how they are formed 2.To learn about the polar covalent.

Section 12.1 Characteristics of Chemical Bonds 1.To learn about ionic and covalent bonds and explain how they are formed 2.To learn about the polar covalent.
Chemical bonds hold compounds together.

Chemical bonds hold compounds together.
Chemical Bonding. Chemical Bond The forces that hold groups of atoms together and make them function as a unit Bonding involves only the valence electrons.

Chemical Bonding. Chemical Bond The forces that hold groups of atoms together and make them function as a unit Bonding involves only the valence electrons.

Similar presentations

Ads by Google