Your SlideShare is downloading. ×
  • Like
The Structure of Matter
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

The Structure of Matter

  • 264 views
Published

 

Published in Education
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
264
On SlideShare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Section 4.2 Ionic and Covalent Bonds
    • _Bonds_ form when two or more atoms join together.
    •  Many _substances_ mean many ways to bond.
    •  Three Main Types of Bonds
    • _Ionic_ Bonds
    • _Metallic_ Bonds
    • 3. _Covalent_ Bonds
  • 2. The Goal of Bonding
        • The goal of bonding is to get a full __Valence__ _Shell_.
        • This is accomplished by either _sharing_ a pair of electrons or by _transferring_ them from one atom to another.
  • 3. Bonds are Springy!
        • Bonds can _Bend__ and _stretch_ without breaking.
        • Some bonds are __stronger__ and more _rigid_.
        •  Other bonds are _weaker_ and more _flexible_.
        •  Both types are more like _Springs_ than sticks (from the ball-and-stick model).
  • 4. IONIC BONDS!!
        •  Form between _ions_ with opposite charges.
        •  __Metals__ like sodium and calcium form positive ions, or ___cations___.
        •  ___Nonmetals____ like chlorine and oxygen form negative ions, or __anions___.
        •  Ionic bonds form by the __transfer__ of ___electrons___.
        •  One positive ion attracts several __negative__ ions. One negative ion attracts several __positive__ ions. These many attractions form strong __networks__ like NaCl (table salt). (Remember we said that network structures have very high melting points.)
  • 5. The Formula Unit
        •  Ionic compounds form _____________, NOT ________________.
        •  The goal of ionic bonding is to get a _neutral__ charge, so we can determine the number of ions by __balancing__ our charges.
          • o Na + and Cl -  NaCl
          • o Ca +2 and F -  CaF 2
    •  The smallest unit of an ionic compound is called a ___Formula__ __Unit__, NOT a “molecule”.
    Networks molecules
  • 6. Conducting Electricity!
        •  Ionic Compounds conduct __Electricity___ when dissolved in water.
        •  Electricity is just moving charges, and as solids, ionic compounds are __strong__ and can’t __move__, which means their solid form cannot conduct electricity. (Remember the high melting points-It takes a lot to melt these network structures because it takes a lot of energy to break those strong ionic bonds!!)
        •  Ions will __split__ apart in water and can _move_ freely, meaning an electric charge can also move through, or be “__Conducted__”.
  • 7.  
  • 8.