January 2017 Chemistry Regents #16-20

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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 56-57 Questions 58-59 Questions 60-61 Questions 62-65  Questions 66-68  Questions 69-72  Questions 73-77 Questions 78-79 Questions 80-82 Questions 83-85  

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16 Which sample of matter represents a mixture?

(1) aqueous ammonia (3) liquid mercury

(2) gaseous ethane (4) solid iodine

1 aqueous is in water
17 Differences in which property allow the separation of a sample of sand and seawater by filtration?

(1) concentration of ions   (2) volume of sample

(3) mass of sample            (4) particle size

4 sand cannot fit through a filter
18 Which process is a chemical change?

(1) evaporating an alcohol    (2) subliming of iodine

(3) melting an ice cube         (4) rusting of iron

4 3 are phase changes and rusting is a reaction

 

19 Which term represents an intermolecular force in a sample of water?

(1) hydrogen bonding    (2) covalent bonding

(3) metallic bonding       (4) ionic bonding

1 H with F O N...hydrogen bonding
20 Which sample of matter has particles arranged in a crystalline structure?

(1) Ne(g) (3) NaCl(aq)

(2) Br2(ℓ) (4) CuSO4(s)

4 crystalline structure...solid

 

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 56-57 Questions 58-59 Questions 60-61 Questions 62-65  Questions 66-68  Questions 69-72  Questions 73-77 Questions 78-79 Questions 80-82 Questions 83-85  

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