1 / 12

Movement of Molecules

Movement of Molecules. Osmosis & Diffusion. Terms to Know. Mixture - a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) Homogeneous - describes a sample of matter that has uniform characteristics throughout

timkane
Download Presentation

Movement of Molecules

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Movement of Molecules Osmosis & Diffusion

  2. Terms to Know • Mixture - a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) • Homogeneous - describes a sample of matter that has uniform characteristics throughout • Heterogeneous - describes a sample of matter that has parts with different compositions

  3. Terms to Know • Solution - a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution • Solute -a substance that is dissolved in another substance, thus forming a solution • Solvent -a substance that dissolves other substances, thus forming a solution

  4. Terms to Know • Concentration - measure of how much of a given substance there is mixed with another substance; the number of molecules of a substance in a given volume • Concentration Gradient - change in the concentration of a substance from one area to another.

  5. Terms to Know • Hypotonic – The solution on one side of a membrane where the solute concentration is less than on the other side. Hypotonic Solutions contain a low concentration of solute relative to another solution. • Hypertonic – The solution on one side of a membrane where the solute concentration is greater than on the other side. Hypertonic Solutions contain a high concentration of solute relative to another solution.

  6. Terms to Know • Isotonic - Isotonic Solutionscontain the same concentration of solute as an another solution

  7. Concentrations http://www.tvdsb.on.ca/westmin/science/sbi3a1/Cells/Osmosis.htm

  8. Terms to Know • Diffusion – the movement of molecules from areas of high concentration to areas of low concentration; The process where molecules spread out to form an even concentration

  9. Diffusion Example http://www.wisc-online.com/objects/index_tj.asp?objid=AP1903

  10. Terms to Know • Osmosis – the diffusion of water across a selectively permeable membrane; the movement of a substance dissolved in a solution with a lower concentration through a membrane to a solution with a higher concentration • Selectively permeable - a barrier that allows some chemicals to pass but not others. The cell membrane is such a barrier.

  11. Osmosis Example http://www.wisc-online.com/objects/index_tj.asp?objid=AP11003

  12. Sources • http://www.tvdsb.on.ca/westmin/science/sbi3a1/Cells/Osmosis.htm • www.shodor.org/master/environmental/water/runoff/RunoffGlossary.html • wordnet.princeton.edu/perl/webwn • wblrd.sk.ca/~chem30_dev/appendix/glossary.htm • http://www.wisc-online.com/objects/index_tj.asp?objid=AP1903 • www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossS.html • www.geocities.com/templarser/complexglos.html

More Related