home *** CD-ROM | disk | FTP | other *** search
/ Exploring Creation with P…al Science (2nd Edition) / Exploring Creation with Physical Science (2nd Edition).iso / mm / mod04 / fig4_5.avi (.mp4) < prev    next >
Audio Video Interleaved Video  |  2012-12-18  |  4.2 MB  |  532x296  |  3fps  |  50 seconds
Transcription: Water dissolves ionic compounds by getting in between the ions and pulling them apart, making them a part of the solution. In the case of water-dissolving sodium chloride, here's how that happens. Notice how the water molecules orient themselves so that the oxygen on the water molecule is pointed towards the smaller sodium ion and the hydrogens on the water molecule are pointed towards the larger chloride ions. This should make sense. After all, the sodium ion is positively charged, so it attracts the slight negative charge that is on the oxygen atom of the water molecule. In the same way, the ...