June 2018  Chemistry Regents #26-30

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Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-79  Questions 80-82  Questions 83-85 

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3  
27 The stability of an isotope is related to its ratio of

(1) neutrons to positrons

(2) neutrons to protons

(3) electrons to positrons

(4) electrons to protons

2  
28 Which particle has the least mass?

(1) alpha particle (3) neutron

(2) beta particle (4) proton

2  

 

29 The energy released during a nuclear reaction is a result of

(1) breaking chemical bonds

(2) forming chemical bonds

(3) mass being converted to energy

(4) energy being converted to mass

3  
30 The use of uranium-238 to determine the age of a geological formation is a beneficial use of

(1) nuclear fusion

(2) nuclear fission

(3) radioactive isomers

(4) radioactive isotopes

4  

 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-56 Questions 57-59 Questions 60-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-79  Questions 80-82  Questions 83-85 

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