June 2024  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

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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6. Oxygen can exist as diatomic oxygen gas, O₂(g), or ozone, O₃(g). These two forms of oxygen have:

1 The same molecular structure and the same properties.
2 Different molecular structures and different properties.
3 The same molecular structure and different properties.
4 Different molecular structures and the same properties.
 		 2   Different molecular structures and different properties.

always on test

 (sometimes diamond vs. graphite)
7. Which formula contains a polyatomic ion?
1  KCN
2  KBr
3  AlBr₃
4  Al₂O₃
 		 1   Table E  CN-  cyanide

It is also the only compound with 3 elements.
8. What information about CH₄ can be determined from its structural formula, but not determined from its molecular formula?

1 Physical state
2 Molar mass
3 Ratio of different atoms
4 Arrangement of the atoms		 4   The term structure means how the atoms are arranged.

 

9. Which quantity is conserved in all chemical reactions?

1 Charge
2 Density
3 Moles
4 Volume
 

 1   Things that are conserved in Regents Chemistry:

mass, CHARGE and energy
10.What do the coefficients in a balanced chemical equation indicate about the substances in the equation?

1 Mass ratios
2 Mole ratios
3 Empirical formulas
4 Molecular formulas

 2   Coefficients in balanced reactions are mole ratio.

 

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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