January 2015 Chemistry Regents #6-10

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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 51-53 Questions 54-55
 Questions 56-58 Questions 59-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-81 Questions 82-85

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Questions

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Explanations

6 At STP, which element is a good conductor of electricity?

(1) chlorine (3) silver

(2) iodine (4) sulfur

3 Link the metal
7 Which phrase describes the molecular structure and properties of two solid forms of carbon, diamond and graphite?

 (1) the same molecular structures and the same properties

(2) the same molecular structures and different properties

 (3) different molecular structures and the same properties

 (4) different molecular structures and different properties

4 Link  different molecular structures = different properties
8 Which quantity is equal to one mole of Au?

(1) the atomic mass in grams

(2) the atomic number in grams

(3) the mass of neutrons in grams

(4) the number of neutrons in grams

1 Link definition of the mass of a mole

 

9 Given the balanced equation representing the reaction between methane and oxygen:

CH4 + 2O2 → CO2 + 2H2O

According to this equation, what is the mole ratio of oxygen to methane?

4 Link A chemical reaction is written in mole proportions
10 Which list includes three types of chemical reactions?

(1) decomposition, single replacement, and solidification

(2) decomposition, single replacement, and double replacement

(3) solidification, double replacement, and decomposition

(4) solidification, double replacement, and single replacement

2 Link See link

 

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 51-53 Questions 54-55
 Questions 56-58 Questions 59-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-81 Questions 82-85

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