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12 Cards in this Set
- Front
- Back
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Water is a good coolant in sweat because... |
...because it has a high specific heat. |
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Water Molecule |
A polar molecule made of 1 oxygen atom and 2 hydrogen atoms. |
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Water is good for transport because... |
...because it can easily dissolve glucose, sodium chloride, oxygen, and many amino acids. |
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Positive Pole |
Area with fewer electrons, near the hydrogen atom nuclei. |
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Negative Pole |
Area with more electrons, around the oxygen atom. |
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Hydrogen Bond |
A weak bond formed between polar water molecules. |
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High Specific Heat |
Because some heat is used to break H-bonds, more is needed to raise the temperature. |
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Density is lower in solid form (ice) because... |
...because extra hydrogen bonds cause cold water molecules to move apart slightly. |
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Polarity |
Having positively and negatively charged areas because of an uneven distribution of electrons. |
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Water is an excellent solvent because... |
...because polar water molecules dissolve so many substances. |
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Cohesion is high because... |
...because H-bonds make water molecules stick to each other more strongly. It causes surface tension. |
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Water has dipolarity because... |
...because water molecules contain both positive and negative charges. |
