properties of water and ph
DESCRIPTION
Properties of Water and pH. http://www.youtube.com/watch?v= aVmU3CLxvgU. Van der Waals Forces. Van der Waals forces- force between molecules due to intermolecular attraction. Hydrogen Bonding. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/1.jpg)
Properties of Water and pH
http://www.youtube.com/watch?v=aVmU3CLxvgU
![Page 2: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/2.jpg)
Van der Waals Forces
• Van der Waals forces- force between molecules due to intermolecular attraction.
![Page 3: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/3.jpg)
Hydrogen Bonding
• Hydrogen bonding- a type of intermolecular attraction due to differences in electronegativity between a polar molecule that contains hydrogen and an atom in another polar molecule.
![Page 4: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/4.jpg)
Properties of Water• ALL a result of water’s ability to hydrogen
bond!• Cohesion• Adhesion– Capillary action
![Page 5: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/5.jpg)
Properties of Water
• Heat capacity
• Expands when frozen• Ice is less dense than water
![Page 6: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/6.jpg)
Mixtures of Water• Solutions- all components are evenly distributed.– Solute– Solvent
• Suspensions- all components are NOT evenly distributed, water and nondissolved material.
Example of both a solution and a suspension: blood
![Page 7: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/7.jpg)
pH Scale
• Indicates the concentration of H+ in a solution.pH = -log [H+]
![Page 8: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/8.jpg)
Buffers
![Page 9: Properties of Water and pH](https://reader035.vdocuments.us/reader035/viewer/2022062309/56813652550346895d9dd7fd/html5/thumbnails/9.jpg)
Buffers
• Weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH.
• Buffers dissolved in living organisms play an important role in maintaining homeostasis in organisms.