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CHM135H1 (333)

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Kris Quinlan

LECTURE 5 States of Matter Slide No. Notes 2 - intermolecular forces determine state of matter - for instance, if intermolecular forces very strong, state of matter is solid 3 - 2 molecules approach each other, not bonding 5 - opposites attract - the stronger the charges, the stronger the attraction - mixtures are where dipole-dipole interactions occur: need for ions and polar molecules 6 - leftside: lower energy state with many attraction forces - rightside: dipoles are moving around - H-bonding present in DNA, between strands - F, N, and O are the only elements that can H-bond because they are in the first row of the periodic table, so they are small, so H can get close to the nucleus of these elements, therefore closer attraction 7 - how readily dispersed 8 - range of ion-dipole strength because it depends on charge of ion, and size of molecules dipole - London dispersion forces range from smaller to larger than dipole- dipoles range - Large molecules have strong dispersion forces because of the presence of many e
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