January 2015 Chemistry Regents #26-30
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Questions | Answer | Links | Explanations |
26 Which process occurs in an operating voltaic cell? (1) Electrical energy is converted to chemical energy. (2) Chemical energy is converted to electrical energy. (3) Oxidation takes place at the cathode. (4) Reduction takes place at the anode. | 2 | Link | Voltaic=Battery Chemical to electrical |
27 What can be explained by the Arrhenius theory? (1) the behavior of many acids and bases (2) the effect of stress on a phase equilibrium (3) the operation of an electrochemical cell (4) the spontaneous decay of some nuclei | 1 | Link | Acid Base theory |
28 According to one acid-base theory, a water molecule acts as an acid when the molecule (1) donates an H ion (2) accepts an H ion (3) donates an OH ion (4) accepts an OH ion | 1 | Link | Bronsted Lowry Acid definition |
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29 Positrons and beta particles have (1) the same charge and the same mass (2) the same charge and different masses (3) different charges and the same mass (4) different charges and different masses | 3 | Link | same mass opposite charge |
30 Which term identifies a type of nuclear reaction? (1) transmutation (3) deposition (2) neutralization (4) reduction | 1 | Link | Transmutation-when an element changes into a different element |
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