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12 Cards in this Set
- Front
- Back
What is a cation? |
A positively charged ion. |
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What is an anion? |
A negatively charged ion. |
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Ionic bonds are mainly found in what parts of the body? |
Found mainly in teeth and bones. |
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What is an electrolyte? |
An ionic compound that breaks apart into positive and negative ions in solution. Can conduct electricity. |
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What are the common cations in the body? (8 things). |
Hydrogen ion Sodium ion Potassium ion Ammonium ion Magnesium ion Calcium ion Iron (II) ion Iron (III) ion |
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What are the common anions in the body? |
Fluoride ion Chloride ion Iodide ion Hydroxide ion Bicarbonate ion Oxide ion Sulfate ion Phosphate ion
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What is the main difference between an ionic bond and a covalent bond? |
An ionic bond involves the loss and gain of electrons; a covalent bond involves the sharing of pairs of electrons. |
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When does a hydrogen bond form? |
Forms when a hydrogen atom with a partial positive charge attracts the partial negative charge of neighboring electronegative atoms |
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Hydrogen bonds are (strong/weak) compared to ionic and covalent bonds. |
Hydrogen bonds are weak compared to ionic and covalent bonds. |
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Why would you expect ammonia (NH3) to form hydrogen bonds with water molecules? |
The N is electronegative, attracts electrons more strongly than the H atoms do, the N end of ammonia acquires a slight negative charge, allowing H atoms to form hydrogen bonds with it. Likewise, O atoms in water molecules can form hydrogen bonds with H atoms in ammonia molecules. |
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What is surface tension? |
A measure of the difficulty of stretching or breaking the surface of a liquid. |
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What is a special property of water, due to hydrogen bonding? |
Cohesion: the tendency of like particles to stay together. |