June 2016 Chemistry Regents #26-30
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Questions | Answer | Links | Explanations |
26 The reaction of an Arrhenius acid with an Arrhenius base produces water and (1) a salt (3) an aldehyde (2) an ester (4) a halocarbon | 1 | acid and base makes salt and water | |
27 One acid-base theory defines an acid as an (1) H- acceptor (3) H+ acceptor (2) H- donor (4) H+ donor | 4 | acids donate H+ bases accept | |
28 Which phrase describes the decay modes and the half-lives of K-37 and K-42? (1) the same decay mode but different half-lives (2) the same decay mode and the same half-life (3) different decay modes and different half-lives (4) different decay modes but the same half-life | 3 | Use Table N | |
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29 Which particle has a mass that is approximately equal to the mass of a proton? (1) an alpha particle (3) a neutron (2) a beta particle (4) a positron | 3 | Either know it or use Table O | |
30 Which change occurs during a nuclear fission reaction? (1) Covalent bonds are converted to ionic bonds. (2) Isotopes are converted to isomers. (3) Temperature is converted to mass. (4) Matter is converted to energy. | 4 | Nuclear= Matter is converted to energy
E=mc2 | |
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