Download 7-Molecular Models Activity.cwk (WP)

Chemistry
Organic Bonding Models
Name_______________________
Date________________
Today you will SEE what an actual molecule looks like. You will do three things...One, find the structural formula, which
you have been doing all this time...Two, you will construct the actual molecule using the models provided...and Three, you
will draw the molecule in as accurate as representation as possible.
Part I
First, you need to become acquainted with the Models so that you can accurately construct molecules later on.
1.) Find a BLACK atom in the box.
a.) How many holes does it have?
b.) Knowing what you know about VALENCE electrons which column would this atom most likely come out of?
c.) Since we are dealing with ORGANIC molecules what atom do you suspect that the BLACK model represents?
f.) If you said CARBON you were correct!!! Excluding Kyle, you are ALL very sharp cookies!!!
2.) How many yellow models do you have in the box...these are HYDROGEN atoms.
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3.) How many orange models do you have in the box...these are BROMINE atoms.
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4.) How many purple models do you have in the box...these are IODINE atoms.
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5.) How many blue models do you have in the box...these are NITROGEN atoms.
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6.) How many red models do you have in the box...these are OXYGEN atoms.
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7.) How many green models do you have in the box...these are CHLORINE atoms.
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8.) How many wooden pegs do you have in the box...these are SINGLE BONDS.
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9.) How many spring pegs do you have in the box...these are DOUBLE/TRIPLE BONDS.
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Part II
Second, you need to become acquainted with the bonding of the models.
1.) Find a BLACK atom in the box.
a.) insert a wooden peg in each hole...these represent UNFILLED BONDS at this point...how many are there?
DE-CONSTRUCT YOUR MODEL NOW.
2.) Find another BLACK atom in the box.
a.) insert a wooden peg between both black atoms...this represents a single bond between carbons.
DE-CONSTRUCT YOUR MODEL NOW.
3.) Now find 2 springs in the box.
a.) insert them into adjacent holes in one carbon atom...and then insert them into adjacent holes in the other
carbon atom...these represent double bonds between carbon atoms.
4.) Now find another spring in the box.
a.) insert the spring into an open hole in EACH carbon atom...this represents a triple bond between carbon atoms.
DE-CONSTRUCT YOUR MODEL NOW.
Part III
Now it is time to build some molecules.
1.) Find the structural formula for each molecule.
a.) make sure to use the Lewis Dot method so that you accommodate for single, double and triple bonds.
2.) Draw the structural formula for each molecule.
a.) make sure to use single lines for single bonds, double lines for double bonds and triple lines for triple bonds.
3.) Draw the actual molecular model for each molecule.
a.) use the color pencils provided.
b.) make sure the the size of the atoms corresponds to the size of the atoms in the box.
c.) make sure to use the proper colors.
d.) make sure to show the bonds...use a neutral color.
Common Name
Molecular Formula
Methane
CH4
Ethane
C2H 6
Methyl Alcohol
CH3OH
Structural
Molecular
Ethylene
C2H4
Formaldehyde
CH2O
Acetylene
C2H 2
Hydrogen Cyanide
HCN
Part IV
Now it is time to CHALLENGE yourself.
1.) Find the structural formula for each molecule.
a.) make sure to use the Lewis Dot method so that you accommodate for single, double and triple bonds.
2.) Draw the structural formula for each molecule.
a.) make sure to use single lines for single bonds, double lines for double bonds and triple lines for triple bonds.
3.) Draw the actual molecular model for each molecule.
a.) use the color pencils provided.
b.) make sure the the size of the atoms corresponds to the size of the atoms in the box.
c.) make sure to use the proper colors.
d.) make sure to show the bonds...use a neutral color.
***Construct Models FIRST-then draw (& calculate if need be)
***Make groups then put together (carbons like to bond to carbons)
***The holes left on each group should lead you to the next bond.
Molecular Formula
CH3(CH2)3OH
(CH3)2CHCH2OH
(C2H5)2O
Structural
Molecular