intermolecular forces...intermolecular forces influence when the substance melts and boils....
TRANSCRIPT
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Intermolecular Forces
Atoms and molecules sticking together
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WHAT IS THE DIFFERENCE BETWEEN INTER- AND INTRA- MOLECULAR FORCES?
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Directions
On a small portion of paper write all appropriate words you can think of that start with inter- and intra-
For example: interstate and intravenous
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Directions
Now as a table, combine all the words onto one sheet of white paper.
Divide the words into two columns titled: inter- and intra-
Count how many your table can think of and record this number on the board.
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Share
We will now collect all the appropriate words on a list.
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Purpose
What does “intra” mean when used in these words and what does “inter” mean in these words?
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Inter- means between two separate things.
An interstate highway connects multiple states together.
Interpret is to convert from one language to another.
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Intra- means within something
Intrapersonal is when a person is looking for something within themselves.
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CONNECTING INTRA AND INTER WITH CHEMISTRY
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Intramolecular Forces
An intramolecular force is between the atoms which make-up the compound or molecule.
For example: covalent bonds between hydrogen and carbon in CH3CH3 and ionic bonds between Na and Cl in NaCl (and metallic bonds)
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Intermolecular Forces
This is a force which occurs between two or more separate molecules.
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Four Types of Intermolecular Forces
Ion-dipole
Dipole-dipole
London dispersion forces
Hydrogen bonding
- These types will be defined later.
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Similarity
They are both sticking things together…. but intramolecular forces are stronger then intermolecular forces.
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Difference
Breaking an intermolecular force does NOT change the compound or molecule.
Breaking an intramolecular force DOES change the compound or molecule (to something new!)
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Difference
Intermolecular forces can easily be broken by adding heat.
Intermolecular forces influence when the substance melts and boils.
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Difference
Intramolecular forces build molecules.
Intramolecular forces create “units”