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24 Cards in this Set
- Front
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Intermolecular Force |
How two entities are attracted to one another. |
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Name the Intermolecular Forces |
*Dipole-dipole *London Dispersion Dipole induced dipole Ion dipole ion induced Dipole *Ion Ion *Hydrogen Bonding |
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Dipole-Dipole |
Attractive forces between partial positive end of one polar molecule and partial negative end of another polar molecule. |
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London Dispersion |
When the forces cancel each other out, or all the bonds are pure covalent. Electron density is distributed evenly throughout the molecule. |
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Ion-Ion |
-Ionic compounds form repeating units. -Intramolecular and Intermolecular forces are the same. -It will form a crystal lattice. |
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Hydrogen Bonding |
Stronger form of Dipole dipole. Caused by highly electronegative atoms. THEY ONLY OCCUR BETWEEN HYDROGEN, OXYGEN, FLUORINE OR NITROGEN! |
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Name the Intermolecular forces in order of their strength. (Strongest to weakest) |
(Energy kj/mol) Ion-dipole (40 - 600) H Bond (10 - 40) Dipole-Dipole (5 - 25) L. Dispersion (0.05 - 40) |
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Name the 4 Intramolecular Forces |
Ionic Pure Covalent Polar Covalent Metallic |
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How can you find out what Intramolecular force a compound has? |
EX. Water (H2O) 1. Find a periodic table that has electronegativity listed on the elements. Hydrogen = 2.1 Oxygen = 3.5 2. Subtracted the smaller number from the larger one. 3.5 - 2.1 = 0.4 3. If the remainder falls between 0 to 0.5, it is Pure Covalent. If it falls between 0.5 to 1.7, it is polar covalent. If it is anything over that then it is Ionic. This compound has a Pure Covalent intramolecular force. |
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Intramolecular Force : Metallic |
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Atomic Theories: Define Empedocles |
Empedocles: All matter is made up of Water, Fire, Air and Earth. |
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Democritus 400BC |
All Matter is made up of tiny particles called ATOMOS and empty space. |
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Aristotle |
Didn't believe in the nothingness of empty space. Set Science back for almost 2000 years. |
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Antoine Lavoisier 1743-1794 |
Came up with the Conservation of Mass Theory. |
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Joseph Proust and John Dalton |
Law of definite proportions: Elements combine in a characteristic mass ratio. Law of multiple proportions: there may be more than one mass ratio. |
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Dalton Atomic Theory |
Matter is composed of indestructible, indivisible atoms, which are identical for one element, but different from each other. |
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J.J. Thomson |
Discovered the Electron |
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Robert Millikan |
Used the oil drop apparatus to determine the charge and mass of an electron. |
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Hantaro Nagaok |
Developed the Saturnian system. It was an invalid model since the electron would spiral towards the nucleus and the atom would break. |
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Rutherford |
Discovered Proton. |
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James Chadwick |
Discovered the neutron. |
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Albert Einstein |
Explained the photoelectric effect. A photon of red light contains less energy than a photon of UV light. |
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Heisenberg's Uncertainty Principle |
Impossible to know an e- exact pathway and it's location at the same time. |
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Electronegativity |
A measure of an atom's ability to attract e- within a chemical bond. It's the property of an atom. |
