Name: ________________________ Per: _____ Date: ____________
An Abundance of Bonds
----------------------------------- Day 1 ----------------------------------------<
1. Review your Periodic Table Intro / Review at:
http://www.oocities.org/CapeCanaveral/7639/atmosphere/periodictable.htm
2. Review your "Chemistry for...." introduction to chemical bonding at: http://www.oocities.org/CapeCanaveral/7639/atmosphere/chemistry_for_any_whose_previous.htm
3. In your "Bond Book" (based on http://www.beyondbooks.com/psc92/3.asp), put a check next to each sentence that is illustrated by the following tutorials:
3.1 Atomic Structure and Ionic Bonding at: http://www.wisc-online.com/objects/index_tj.asp?objID=GCH2204
3.2 Covalent Bonds at: http://www.wisc-online.com/objects/index_tj.asp?objID=GCH2404
----------------------------- Day 2 ---------------------------------
4. Following are diagrams of the main gases that are our air. (instructions follow)
4.1 Use a Periodic
Table to label each atom with the number of protons, neutrons and electrons each atom has.
4.2 How many electrons does each atom need to share to form a covalent bond? This is the number of electrons needed to fill its valence shell (its outermost electron shell). In other words, how many elements are to the right of that element in its row/period the Periodic Table?Carbon needs to share ________ electrons to fill its outer shell.
Oxygen needs to share ________ electrons to fill its outer shell.
Hydrogen needs to share ________ electrons to fill its outer shell.
Nitrogen needs to share ________ electrons to fill its outer shell.
Argon needs to share ________ electrons to fill its outer shell.
4.3 Draw lines on the molecules to show how many bonds connect each atom to others, one bond for each shared electron needed to fill each atom's outer shell. For example, Nitrogen needs to share three electrons, so there should be three bonds between the two Nitrogen atoms of the molecule N2.
4.4 Draw or photograph the molecular models representing the atmosphere molecules in the previous diagrams. Also draw or photograph the molecular models that are available but are not in the diagrams.
4.5 Write their formulas, and identify what kind of bonds (ionic, covalent) connect the atoms. Also look up in your text (or other source) and write down what percentage of the air is composed of each molecule.
5. Finally, illustrate each paragraph in the summary of your "Bond Book".
ANSWER KEY FOR INSTRUCTION 3.1 - YOUR PRINTED COPY OF THE ARTICLE BELOW SHOULD HAVE CHECKS WHERE THERE ARE NUMBERS. THE NUMBERS CORRESPOND TO THE "SCENE" FROM THE TUTORIAL SHOW ON THE RIGHT.
