Amplifiers #1C PDF

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Amplifiers...

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Amplifiers

All of the following are hydrogen bonding properties except __________. a. NONPOLAR COVALENT BONDING 2. Adhesion is best described as __________. a. the clinging of one substance to another substance 3. Water is a polar molecule. This means that __________. a. the opposite ends of the molecule have opposite electrical charges 4. Adding a base tends to __________ of a solution. a. lower the hydrogen ion concentration and increase the pH 5. Hydrophobic molecules __________. a. are uncharged, nonionic substances that seem to repel water 6. The ability of water molecules to form hydrogen bonds with other water molecules and water's ability to dissolve substances that have charges or partial charges are __________. a. both caused by water's partial charges 7. The phenomenon responsible for maintaining the upward movement of water through a vessel is __________. a. Cohesion 8. Sweating has a cooling effect because of water's high __________. a. heat of vaporization 9. You can fill a glass of water to just slightly above the rim without it spilling over the glass. What property of water best explains this phenomenon? a. Surface tension 10. Water moves up a plant because of hydrogen bonds by a process called __________. a. cohesion and adhesion 11. When ice forms, the __________ are farther apart than in liquid water, allowing the ice to form an organized crystal structure and float. a. hydrogen bonds 12. Nonpolar molecules that cluster away from water molecules are called __________ molecules. a. Hydrophobic 13. The partial charges on a water molecule occur because of __________. a. the unequal sharing of electrons between the hydrogen and the oxygen atoms of a water molecule 14. An acid is __________. 1.

a compound that donates hydrogen ions to a solution 15. Adding a base tends to __________ of a solution. a. lower the hydrogen ion concentration and increase the Ph 16. The specific heat of a substance is __________. a. the amount of heat that must be absorbed or lost for 1 g of that substance to change its temperature by 1°C 17. Hydrophilic molecules __________. a. are charged molecules that are attracted to the partial charge of the water molecule 18. Buffers are __________. a. substances that minimize changes in the concentration of H + and OH– in a solution 19. A compound that donates hydrogen ions to a solution is __________. a. an acid 20. A substance that reduces the hydrogen ion concentration of a solution is __________. a. a base 21. __________ is an emergent property of water that allows insects like the raft spider to walk on water. a. Surface tension a....