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8 Cards in this Set
- Front
- Back
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Is water bipolar |
yes |
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Why is water bipolar |
due to uneven distribution of charge within the molecule. |
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Water molecules are linked through |
hydrogen bonds |
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How many hydrogen bonds can a water molecule bond with |
A water molecule can form 4 hydrogen bonds with 4 other water molecules. |
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Is hydrogen bond a weak bond |
Yes , not as strong as normal ionic bond or covalent bond |
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Importance of water ( long ) |
1. As universal solvent.2. Has high surface tension and cohesion. 3. Has high specific heat capacity. 4. Has high latent heat of vaporisation. 5. Has high latent heat of fusion. 6. Density decreases when below 4°C. 7. Medium of chemical reaction. 8. One of reactants or products in chemical reaction.- raw material in photosynthesis. 9. Lubricant 10. Provides moist surface. 11. As medium of transport and removal of waste substances. 12. As medium of fertilisation 13. As support 14. As dispersal agent for seeds |
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importance of water ( short )
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1. universal solvent.2. ⬆️ surface tension and cohesion.3. ⬆️ Heat capacity.4. Medium of chemical reaction.5. reactants or products 6. Lubricant 7. medium of -transport - removal of waste substances. -fertilisation 8. support 9. dispersal agent for seeds |
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The importance of water: As universal solvent |
Can dissolve both ionic and polar substance. |
