Monday, February 16, 2015
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Wednesday, January 28, 2015
Saturday, January 17, 2015
Chemistry Comic
On the periodic table, the closer elements are to fluorine, the more electronegative they are.
"Polar" means uneven, so the element in a polar bond drawing electrons closer to it will have a negative charge while the other will have a positive charge (notice the letters written on the dinosaurs).
Ionic bonds are where one atom gives an electron to the other atom. On the other hand, in a covalent bond, atoms share an electron. A bond is determined as ionic or covalent by the difference in electronegativities. If the difference is between 0-0.3, then it is nonpolar-covalent, having an ionic character of 0%-5%. If it has a difference of 0.3-1.7, it is polar-covalent, with an ionic character of 5%-50%. Anything between 1.7 and 3.3 is ionic (these numbers are not a set value, though, so there are different ranges depending on where you look).
Friday, January 9, 2015
Sunday, January 4, 2015
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