Mickey Mouse Molecule
Step One
• Color the pieces – the nuclei need to be the
same color as their respective atoms. All
atoms of the same element should be the
same color.
• All electrons should be colored the same color.
Make it a totally different color than what you
have used thus far.
Step Two
• Cut out the pieces and…
Match the nuclei to their respective atoms.
Match the electrons to their respective atoms.
Call me over and get your worked checked
before you proceed to gluing!!!
Step Three
• Glue the nuclei and electrons to their
respective atoms.
• DO NOT CONNECT ATOMS YET!
• Locate a sheet of notebook paper.
Step Four
• How many electrons are in oxygen’s outer
shell?
• An atom needs to have its outermost electron
shell FULL in order to be stable.
– Is oxygen stable?
BONDING
• The oxygen atom is going to SHARE hydrogen’s
electrons.
• This is called a COVALENT BOND.
• Covalent bonds are strong, but ionic bonds are
stronger!
Step Five
• Stabilize your oxygen atom!
What do you notice about this
molecule?
• Unequal sizes of atoms
• Unequal sharing of
electrons
• Results in a POLAR
COVALENT BOND
• “ears” have _____
charge
• “head” has
_______charge
• Label your molecule!
So what?
Hydrogen bonding!
Hydrogen Bonding
• The weakest type of bond, more of an
attraction…
• But incredibly powerful!!!
• Bottle capped with cloth – it overcame the
force of gravity!
Because water molecules are sticky…
•
•
•
•
ADHESION – stick to other things
COHESION – stick together
SURFACE TENSION
STAYS A LIQUID OVER A HUGE TEMPERATURE
RANGE – moderates temperature…
• UNIVERSAL SOLVENT – dissolves things!
• http://www.visionlearning.com/library/module_v
iewer.php?mid=57
Ice = less dense than liquid water