Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are...

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Bonds

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Electrons are not always evenly shared between atoms… Some atoms attract shared electrons more readily than do other atoms. The electronegativity of an atom is the measure of its ability to attract electrons in a bond. Polar Covalent bonds: the distribution of electrons around the nuclei creates polarity or a difference in electric charge across the molecule. Nonpolar Covalent bonds: a strong bond is formed between two atoms with similar electronegativities and no polarity exists

Transcript of Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are...

Page 1: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Bonds

Page 2: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Covalent Bonds• Atoms share a pair of electrons.• Occur between atoms whose outer shells are

not full. • Covalent bonds are strong chemical bonds,

because the shared electrons behave as if they belong to each atom.

Page 3: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Electrons are not always evenly shared between atoms…

• Some atoms attract shared electrons more readily than do other atoms.

• The electronegativity of an atom is the measure of its ability to attract electrons in a bond.

• Polar Covalent bonds: the distribution of electrons around the nuclei creates polarity or a difference in electric charge across the molecule.

• Nonpolar Covalent bonds: a strong bond is formed between two atoms with similar electronegativities and no polarity exists

Page 4: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,
Page 5: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Hydrogen Bonds• An important result of certain polar covalent bonds

is the ability of one molecule to loosely associate with another molecule through a hydrogen bond.

• This bond forms when a hydrogen atom from one polar molecule is attracted to an electronegative atom, in another polar molecule.

• An example is the attraction between two water molecules.

Page 6: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Ionic Bonds• Atoms are electrically neutral because they

contain equal numbers of electrons and protons.• If an atom loses or gains an electron it becomes

charged (ion) • An ionic bond forms when an ion with a positive

charge is attracted to an ion with a negative charge

Page 7: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

SHAPE

Page 8: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Molecules may change their shape

• When atoms combine, they can form various 3-D shapes, depending on their bonds.

• These shapes are flexible and rotate without breaking any of the covalent bonds.

Page 9: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Shape Affects Life• The 3-D flexible shape of a molecule

contributes to their biological properties. • Ex: Taste, food molecules interact with protein

receptors on our tongues, the two molecules recognize each other by their unique shape, and fit together like a key.

Page 10: Bonds. Covalent Bonds Atoms share a pair of electrons. Occur between atoms whose outer shells are not full. Covalent bonds are strong chemical bonds,

Common Functional Groups• Groups of atoms with characteristic chemical

features and properties attached to a molecule.

• Each functional group exhibits similar properties in all molecules it occurs.

Amino – NH2

Hydroxyl- OHMethyl- CH3

Carboxyl- COOH


Chapter 6 Covalent Compounds. 6.1 Covalent Bonds Sharing Electrons Covalent bonds form when atoms share one or more pairs of electrons nucleus of.

Chapter 6 Covalent Compounds. 6.1 Covalent Bonds Sharing Electrons Covalent bonds form when atoms share one or more pairs of electrons nucleus of.

Chapter 7-2 Covalent Bonding. Covalent Bonds Electrons are shared between two atoms Atoms with covalent bonds are called molecules Anything made of molecules.

Chapter 7-2 Covalent Bonding. Covalent Bonds Electrons are shared between two atoms Atoms with covalent bonds are called molecules Anything made of molecules.

Table of Contents Atoms, Bonding, and the Periodic Table Ionic Bonds Covalent Bonds Bonding in Metals Atoms and Bonding.

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Covalent Compoundstodhigh.com/.../wp-content/uploads/2018/03/Covalent_Compounds.pdf · millions of atoms are joined together by covalent bonds. All the bonds in these structures are

Covalent Compoundstodhigh.com/.../wp-content/uploads/2018/03/Covalent_Compounds.pdf · millions of atoms are joined together by covalent bonds. All the bonds in these structures are

Basic Concepts in Bonding Covalent Bonding Atoms share electrons in covalent bonds, forming a molecular compound. Covalent bonding occurs between two.

Basic Concepts in Bonding Covalent Bonding Atoms share electrons in covalent bonds, forming a molecular compound. Covalent bonding occurs between two.

Section 3 Covalent and Metallic Bonds · 2015. 6. 25. · Section 3 Covalent and Metallic Bonds Key Concept Covalent bonds form when atoms share electrons. Metallic bonds form by

Section 3 Covalent and Metallic Bonds · 2015. 6. 25. · Section 3 Covalent and Metallic Bonds Key Concept Covalent bonds form when atoms share electrons. Metallic bonds form by

Ch. 8 Covalent Bonding 8.1 Molecular Compounds. I. Molecules A. Neutral groups of atoms joined by covalent bonds B. Covalent bonds: atoms share electrons.

Ch. 8 Covalent Bonding 8.1 Molecular Compounds. I. Molecules A. Neutral groups of atoms joined by covalent bonds B. Covalent bonds: atoms share electrons.

Cell Chemistry and Biosynthesis. Overview Major Atoms Covalent bonds, Ionic bonds Water, non-covalent force in water Four major families of small molecules.

Cell Chemistry and Biosynthesis. Overview Major Atoms Covalent bonds, Ionic bonds Water, non-covalent force in water Four major families of small molecules.

Chapter 8: Covalent Bonding - Mr. Miller...form when atoms share electrons. 8.1 The Covalent Bond MAIN Idea Atoms gain stability when they share electrons and form covalent bonds.

Chapter 8: Covalent Bonding - Mr. Miller...form when atoms share electrons. 8.1 The Covalent Bond MAIN Idea Atoms gain stability when they share electrons and form covalent bonds.

Chemical Bonding Atoms & Bonding Ionic Bonds Covalent Bonds Additional Info: Metallic Bonds.

Chemical Bonding Atoms & Bonding Ionic Bonds Covalent Bonds Additional Info: Metallic Bonds.

Ch. 12 Notes---Covalent Bonds Covalent Bonds ____________ electrons between two atoms in order to fill the outer energy level (or shell) Each bond involves.

Ch. 12 Notes---Covalent Bonds Covalent Bonds ____________ electrons between two atoms in order to fill the outer energy level (or shell) Each bond involves.

BONDINGPREVIEW. Bonds Between Atoms Covalent Ionic Polyatomic Ions Metallic Molecular Substance Polar Nonpolar Coordinate Covalent Network Solids What.

BONDINGPREVIEW. Bonds Between Atoms Covalent Ionic Polyatomic Ions Metallic Molecular Substance Polar Nonpolar Coordinate Covalent Network Solids What.

BIOCHEMISTRY REVIEW. HOW MANY COVALENT BONDS MAY CARBON FORM WITH OTHER ATOMS?

BIOCHEMISTRY REVIEW. HOW MANY COVALENT BONDS MAY CARBON FORM WITH OTHER ATOMS?

Chapter 7 Ionic and Covalent Bonds. Review Chemical Bonds form between 2 or more atoms to form molecules Two types of chemical bonds: Ionic Bonds & Covalent.

Chapter 7 Ionic and Covalent Bonds. Review Chemical Bonds form between 2 or more atoms to form molecules Two types of chemical bonds: Ionic Bonds & Covalent.

Covalent Compounds Covalent compounds contain covalent bonds Covalent bonds = sharing electrons Covalent bonds usually form between nonmetals. Covalent.

Covalent Compounds Covalent compounds contain covalent bonds Covalent bonds = sharing electrons Covalent bonds usually form between nonmetals. Covalent.

COVALENT BONDS & MOLECULAR STRUCTURE. CHEMICAL BONDS Form between atoms resulting in molecules (covalent bonds, sharing of electrons). Form between ions.

COVALENT BONDS & MOLECULAR STRUCTURE. CHEMICAL BONDS Form between atoms resulting in molecules (covalent bonds, sharing of electrons). Form between ions.

Bonding Questions For Review 1. The forces that keep atoms ... · Covalent bonds a. Describe covalent bonds: Covalent bonds are a sharing of electrons between two or more nonmetal

Bonding Questions For Review 1. The forces that keep atoms ... · Covalent bonds a. Describe covalent bonds: Covalent bonds are a sharing of electrons between two or more nonmetal

Covalent Bonding Section 4.2. Covalent Bonds Sharing Electrons –Covalent bonds form when atoms share one or more pairs of electrons nucleus of each atom.

Covalent Bonding Section 4.2. Covalent Bonds Sharing Electrons –Covalent bonds form when atoms share one or more pairs of electrons nucleus of each atom.

Water and Ocean Structure Chapter 6. The Water Molecule Molecule Molecule –Group of atoms held together by chemical bonds Covalent bonds Covalent bonds.

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Ionic and Covalent Bonds - COnnecting REpositories · Ionic and Covalent Bonds Section #2 ... atoms can sometimes form a covalent bond also The attraction of each nucleus for the

Ionic and Covalent Bonds - COnnecting REpositories · Ionic and Covalent Bonds Section #2 ... atoms can sometimes form a covalent bond also The attraction of each nucleus for the