June 2024 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 51-52 Questions 53-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-81 Questions 82-85 

   

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Questions

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11. At STP, which substance has metallic bonding?

1. Argon
2. Barium chloride
3. Sulfur dioxide
4. Titanium
 

 4   Titanium is the only metal.

Barium chloride is ionic
12. How many pairs of electrons are shared between the nitrogen atoms in a molecule of N₂?
1  1
2  2
3  3
4  4		 3   Nitrogen has a triple bond

it share 3 pairs of electrons
13 Which formula represents a molecule with an asymmetric distribution of charge?
1 Cl₂
2 CO₂
3 CH₄
4 H₂CO		 4   SNAP

Asymmetrical is polar

1,2,3 are symmetrical-draw them

 

14 Given the equation representing a reaction: I₂ → I + I. What occurs during this reaction?

1 Energy is released and a bond is formed.
2 Energy is released and a bond is broken.
3 Energy is absorbed and a bond is broken.
4 Energy is absorbed and a bond is formed.
 

 4   The bond is broken. 

Breaking bonds is endothermic. Energy is absorbed.
15 The electronegativity difference between the atoms in a molecule of HF can be used to determine the:
1 Energy of the molecule.
2 Functional group of the molecule.
3 Polarity of the bond in the molecule.
4 Volume of the atoms in the molecule.		 3    electronegativity difference determines bond polarity

 

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 51-52 Questions 53-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-81 Questions 82-85 

   

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