Chapter 6 The Structure of Matter

D11 Describe how atoms combine to form new substances by transferring electrons (ionic bonding) or sharing electrons (covalent bonding).

Section 1 Compounds and Molecules

Learning Targets I can explain what holds a compound together. I can differentiate between salt (a network structure) and sugar (a compound made from molecules).

What is a chemical bond? A force that hold atoms or ions together in a compound. discover.edventures.com acsmars.com

How can the structure of chemical compounds be shown? Propane By using models: Ball-and-stick Structural formula Space-filling models chemistry.about.com eastviewchemistry.pbworks.com middleschoolchemistry.com

How would you describe a chemical bond? Bend, stretch, and rotate without breaking Can be represented by flexible springs Hold atoms together tightly labman.phys.utk.edu

What determines the properties of a compound? Chemical structure It is the way in which the atoms stick together AND the ways in which they are arranged.

What are network structures? Have a regular, repeating pattern Strong solids Bonded in a strong, rigid structure Covalent or ionic bonds High melting and boiling points indigo.com pslc.ws ibchem.com

Describe the attraction between molecules? Strength of attraction varies between molecules Can be solids (if attractions between molecules are strong) , or liquids, and gases (if attractions between molecules are weaker.) encyclopedia2.thefreedictionary.com seagas.com.au chem.umass.edu

Learning Target Checkpoint What holds a compound together? What is the difference between salt (a network structure) and sugar (a compound made from molecules)?