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Regents Chemistry Practice Test

50 Questions  I  By Mistersunwoo
Regents Chemistry Practice Test

  
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1. 
  1. The modern model of the atom is based on the work of 
A.
B.
C.
D.
2. 
  1. Which statement is true about the charges assigned to an electron and a proton? 
A.
B.
C.
D.
3. 
  1. In the wave-mechanical model, an orbital is a region of space in an atom where there is 
A.
B.
C.
D.
4. 
  1. What is the charge of the nucleus in an atom of oxygen-17? 
A.
B.
C.
D.
5.  Which pair of symbols represents a metalloid and a noble gas? 
A.
B.
C.
D.
6.  Which statement describes a chemical property of iron? 
A.
B.
C.
D.
7.  Given the reaction: N2(g) + 3 H2(g) <-> page2image167842 NH3(g) What is the mole-to-mole ratio between nitro- gen gas and hydrogen gas? 
A.
B.
C.
D.
8.  What is the percent by mass of oxygen in propanal, CH3CH2CHO? 
A.
B.
C.
D.
9.  Covalent bonds are formed when electrons are    
A.
B.
C.
D.
10.  Which type of molecule is CF4?    
A.
B.
C.
D.
11.  Which change occurs when a barium atom loses two electrons? 
A.
B.
C.
D.
12. 
  1. Which of these elements has the least attraction for electrons in a chemical bond? 
A.
B.
C.
D.
13. 
  1. Conductivity in a metal results from the metal atoms having 
A.
B.
C.
D.
14. 
  1. Recovering the salt from a mixture of salt and water could best be accomplished by
A.
B.
C.
D.
15. 
  1. The average kinetic energy of water molecules is greatest in which of these samples? 
A.
B.
C.
D.
16. 
  1. Helium is most likely to behave as an ideal gas when it is under 
A.
B.
C.
D.
17. 
  1. At STP, the element oxygen can exist as either O2 or O3 gas molecules. These two forms of the element have 
A.
B.
C.
D.
18.  Which sample contains particles in a rigid, fixed, geometric pattern? 
A.
B.
C.
D.
19.  Given the reaction at 25°C: Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) The rate of this reaction can be increased by using 5.0 grams of powdered zinc instead of a 5.0-gram strip of zinc because the powdered zinc has 
A.
B.
C.
D.
20.  Which statement about a system at equilibrium is true? 
A.
B.
C.
D.
21.  A catalyst increases the rate of a chemical reaction by 
A.
B.
C.
D.
22.  Which element must be present in an organic compound? 
A.
B.
C.
D.
23.  Which compound is a saturated hydrocarbon?    
A.
B.
C.
D.
24. 
  1. Which of these compounds has chemical prop- erties most similar to the chemical properties of ethanoic acid? 
A.
B.
C.
D.
25. 
  1. Given the reaction that occurs in an electrochemical cell:  Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)     During this reaction, the oxidation number of Zn changes from
A.
B.
C.
D.
26.  This reaction is an example of
A.
B.
C.
D.
27.  A voltaic cell spontaneously converts    
A.
B.
C.
D.
28. 
  1. Which pair of formulas represents two compounds that are electrolytes? 
A.
B.
C.
D.
29. 
  1. Hydrogen chloride, HCl, is classified as an Arrhenius acid because it produces 
A.
B.
C.
D.
30.  Which compound could serve as a reactant in a neutralization reaction? 
A.
B.
C.
D.
31.  Which of these particles has the greatest mass?    
A.
B.
C.
D.
32.  In a nuclear fusion reaction, the mass of the products is 
A.
B.
C.
D.
33.  Which of these types of radiation has the greatest penetrating power? 
A.
B.
C.
D.
34.  How many electrons are contained in an Au3+ ion?
A.
B.
C.
D.
35. 
  1. Which electron configuration represents the electrons of an atom in an excited state? 
A.
B.
C.
D.
36. 
A.
B.
C.
D.
37. 
  1. Element X is a solid that is brittle, lacks luster, and has six valence electrons. In which group on the Periodic Table would element X be found? 
A.
B.
C.
D.
38. 
  1. What is the empirical formula for the compound C6H12O6? 
A.
B.
C.
D.
39.  The bonds between hydrogen and oxygen in a water molecule are classified as 
A.
B.
C.
D.
40. 
A.
B.
C.
D.
41.  Using your knowledge of chemistry and the information in Reference Table H, which statement concerning propanone and water at 50°C is true? 
A.
B.
C.
D.
42.  A solution that is at equilibrium must be    
A.
B.
C.
D.
43. 
A.
B.
C.
D.
44. 
  1. Which 10-milliliter sample of water has the greatest degree of disorder? 
A.
B.
C.
D.
45.  Which pH indicates a basic solution?    
A.
B.
C.
D.
46.  Which structural formula represents 2-pentyne?
A.
B.
C.
D.
47.  Which structural formula represents an ether?
A.
B.
C.
D.
48. 
A.
B.
C.
D.
49. 
  1. Based on Reference Table N, what fraction of a sample of gold-198 remains radioactive after 2.69 days? 
A.
B.
C.
D.
50. 
  1. As the elements of Group 1 on the Periodic Table are considered in order of increasing atomic radius, the ionization energy of each successive element generally 
A.
B.
C.
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