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18 Cards in this Set
- Front
- Back
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What is a polar molecule? |
A molecule with a difference in electrical charge between two ends |
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How is the electrical imbalance of polarity caused? |
By differences in electronegativity between atoms |
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What is electronegativity? |
The ability of an atom to attract bonding electrons towards itself |
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What level of electronegativity do metals have because they give up their electrons easily? |
Low level (group 1&2 in periodic table) |
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What level of electronegativity do non-metals have? |
High level |
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Does any atom have an electronegativity of zero? |
No |
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What is the patten of electronegativity as seen on the periodic table? |
Electronegativity increases as you go across from left to right and increases from bottom to top (i.e. the top, right corner- Fluorine - is the most electronegative |
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How does the partial chargés work? |
The bond atom with the higher electronegativity becomes slightly negative and the bond atom with the lower electronegativity becomes slightly positive |
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Bonded atoms with equal ectron-attracting strength will have what bonds? |
Non-polar bonds |
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What are the three types of polar bonding and how strong is the charge for each? |
Non-polar covalent bonding: no charge Polar covalent bonding: slight charge Ionic bonding: extreme charge |
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What is the electronegativity value of hydrogen? |
2.1 |
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What is the electronegativity value of fluorine? |
4.0 |
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What is the electronegativity value of carbon? |
2.5 |
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What is the electronegativity value of chlorine? |
3.0 |
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What is the electronegativity value of nitrogen? |
3.0 |
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Will a lone pair of electrons balance out? |
No |
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An asymmetrical molecule is a: |
Polar molecule |
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A symetrical molecule is a: |
Non-polar molecule |
