January 2017 Chemistry Regents #1-5

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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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1 Which statement describes the location of two types of subatomic particles in a helium atone

(1)     Protons and neutrons are located in the nucleus.

(2)     Protons and neutrons are located outside the nucleus.

(3)     Protons and electrons are located in the nucleus.

(4)     Protons and electrons are located outside the nucleus.

1   protons and neutrons are in the nucleus

electrons are outside

2       An atom that contains six protons, six neutrons, and six electrons has a mass of approximately

(1)     12 u     (3) 18 u

(2)     12 g     (4) 18 g

1   p= 1 u

n=1 u

e= 0 u

6+6+0=12u

3       Which term identifies the most probable location of an electron in the wave-mechanical model of the atom?

(l)      anode       (3) nucleus

(2)    orbital       (4) cathode

2   electrons are found in orbitals

 

4 Which element has atoms in the ground state with the greatest number of valence electrons?

(1) tin (3) arsenic

 (2) sulfur (4) fluorine

4   F  2-7

7 valence electrons (last # in e config)

5 Which group on the Periodic Table has two elements that exist as gases at STP?

(1) Group 1 (3) Group 16

(2) Group 2 (4) Group 17

4   G17  Fand Cl2 are gases

 

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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