June 2016 Chemistry Regents #54-55

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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

Question 51 Questions 52-53 Questions 54-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69  Questions 70-71  Questions 72-74  Questions 75-77  Questions 78-81  Questions 82-85

 

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Questions 54-55

 

 

Base your answers to questions 54 and 55 on the information below and on your knowledge of chemistry.

Some properties of the element sodium are listed below.

•is a soft, silver-colored metal

•melts at a temperature of 371 K

•oxidizes easily in the presence of air

•forms compounds with nonmetallic elements in nature

•forms sodium chloride in the presence of chlorine gas

54 Identify one chemical property of sodium from this list.

Answer-->

oxidizes easily in the presence of air

forms compounds with nonmetallic elements in nature

forms sodium chloride in the presence of chlorine gas

55 Convert the melting point of sodium to degrees Celsius. [1]

Answer-->    98oC
on to Questions 56-68		 

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

Question 51 Questions 52-53 Questions 54-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69  Questions 70-71  Questions 72-74  Questions 75-77  Questions 78-81  Questions 82-85

 

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