August 2015 Chemistry Regents #11-15

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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 51-54 Questions 55-57 Questions 58-59 Questions 60-61 Questions 62-65 Questions 66-68 Questions 69-72 Questions 73-74  Questions 75-76  Questions 77-78  Questions 79-80  Questions 81-82  Questions 83-85

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11 Given the balanced equation: F2 + energy → F + F

Which statement describes what occurs during this reaction?

(1) Energy is absorbed as a bond is formed.

(2) Energy is absorbed as a bond is broken.

(3) Energy is released as a bond is formed.

(4) Energy is released as a bond is broken.

2 link breaking bonds absorbs energy

forming bonds releases

12 Which atoms will bond when valence electrons are transferred from one atom to the other?

(1) O and Se   (3) O and H

(2) O and Sr   (4) O and P

2 link transferred= ionic

 

look for metal and nonmetal

13 Which sample of matter is a mixture?

(1) Br2(ℓ)   (3) KBr(s)

(2) K(s)    (4) KBr(aq)

4 link look for aq

it's a solution

 

14 According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas

(1) increase the energy content of the gas sample

(2) produce strong attractive forces between the gas particles

(3) result in a net loss of energy by the gas sample

(4) transfer energy between the gas particles

4 link  transfer energy between the gas particles
15 Which substance can not be broken down by a chemical change?

(1) ethane           (3) silicon

(2) propanone    (4) water

3 link which is an element?

 

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 51-54 Questions 55-57 Questions 58-59 Questions 60-61 Questions 62-65 Questions 66-68 Questions 69-72 Questions 73-74  Questions 75-76  Questions 77-78  Questions 79-80  Questions 81-82  Questions 83-85

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