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PDF Download HESI A2 CHEMISTRY TERMS & DEFINITIONS STUDY GUIDE
EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -25 Questions and Answers -format set of multiple-choice -Expert- Explanation
Question 1: 19. What are van der Waals forces?
Answer:
- the weak forces of attraction between two molecules
- the strong forces of attraction between two molecules
- hydrogen bonds
- conjugal bonds
ANS: A
Question 2: 21. Which of the following elements is not involved in many hydrogen bonds?
Answer:
- fluorine
- carbon
- oxygen
- nitrogen
ANS: B
Question 3: 8. What is the mass (in grams) of 7.35 mol water?
Answer:
- 10.7 g
- 18 g
- 132 g
- 180.6 g
ANS: C
Question 4: 25. Which of the following elements is an alkali metal?
Answer:
- magnesium
- rubidium
- hydrogen
- chlorine
ANS: B
Question 5: 10. What is the name of the binary molecular compound NO5?
Answer:
- nitro pentoxide
- ammonium pentoxide
- nitrogen pentoxide
- pentnitrogen oxide
ANS: C
Question 6: 1. Which of the follwing substances allows for the fastest diffusion?
Answer:
- gas
- solid
- liquid
- plasma
ANS: A
Question 7: 12. Which kind of radiation has no charge?
Answer:
- beta
- alpha
- delta
- gamma
ANS: D
Question 8: 20. Which of the following gases effuses the fastest?
Answer:
- Cl2
- O2
- N2
- H2
ANS: D
Question 9: 16. What is the name of the device that separates gaseous ions by their mass- to-charge ratio?
Answer:
- mass spectrometer
- interferometer
- magnetometer
- capacitance meter
ANS: A
Question 10: 4. What is another name for aqueous HI?
Answer:
- hyroiodate acid
- hydrogen monoiodide
- hydrogen iodide
- hydroiodic acid
ANS: D
Question 11: 7. What is the name for the horizontal rows of the periodic table?
Answer:
- groups
- periods
- families
- sets
ANS: B
Question 12: 14. What is 119° K in degrees Celsius?
Answer:
- 32°C
- -154°C
- 154 °C
- -32°C
ANS: B
Question 13: 17. Which material has the smallest specific heat?
Answer:
- water
- wood
- alluminum
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