HESI A2: Chemistry (Quiz 3) Welcome to your HESI A2 Practice Quizzes. Note: We designed FIVE (5) sets of practice quizzes for this Domain. Each set has 30 questions. Domain 4 (quiz 3): Chemistry. (30 questions) Please click NEXT to start your Free HESI Practice Quizzes right away. Best of Luck! 1. In a redox reaction, oxidation is the _______ of electrons and reduction is the _______ of electrons. loss, gain gain, loss gain, gain loss, loss None 2. How many days will it take 128 kilograms of a radioactive substance to decay to 16 kilograms if it has a half-life of 32 days? 48 4 3 96 None 3. Which of the options correctly shows the oxidation that occurs in the following reaction? 2Na + 2H2O → 2NaOH + H2 O²- to O° O²- to O¹- → →H° to H¹+ Na° to Na¹+ →→ None 4. Which of the following pairs would result in an acid-base neutralization reaction? KOH + H2SO4 NaOH + LiCl H2 + O2 NaHCO3 + NaBr None 5. When ethylamine is added to water, it creates an alkaline solution. Which of option below would best represent the pH of this solution? 5.0 7.0 1.5 11.9 None 6. What functional group do fatty acids contain? Amine Carboxylic acid Hydrochloric acid Phenols None 7. What are the two types of particles that can be emitted during beta decay? Positron and electron Proton and electron Proton and neutron Positron and neutron None 8. Which of the following orbits the nucleus of an atom? Electron Gamma particle Proton Neutron None 9. Sucrose is an example of what type of carbohydrate? Oligosaccharide Disaccharide Polysaccharide Monosaccharide None 10. What does the atomic mass of an element represent? The number of protons in one atom The average mass of all isotopes of that element The number of protons, neutrons, and electrons in one atom The number of protons and neutrons in one atom None 11. Which of the following is the atomic number for the element francium? 223 88 87 348 None 12. Which of the following is not a subatomic particle? Ion Proton Electron Neutron None 13. An atom with 7 protons, 8 neutrons, and 10 electrons has which of the following charges? -1 -3 3 None 14. H2O is an example of which of the following: Atom Sub-atomic particle Element Compound None 15. Which of the following particles has a negative charge? Proton Neutron Electron Positron None 16. Which of the following phase transition describes the change from ice into steam? Evaporation Melting Freezing Sublimation None 17. Which of the states of matter have a definite volume? Gas and liquid Gas, liquid, and volume Gas and solid Liquid and solid None 18. Which of the following states of matter for a certain substance is generally the densest? Liquid Solid Gas All are equally dense. None 19. Which of the following states of matter take the shape of the container they are placed in? Liquid and solid Liquid and gas Gas, liquid, and solid Gas and solid None 20. What atom property determines if a bond is polar or non-polar? Polarity Electron affinity Ionization energy Electronegativity None 21. What state of matter are unsaturated fats at room temperature? Gas Solid Liquid Plasma None 22. Scientific notation is used by scientists to write very large and very small numbers. Which option correctly represents the scientific notation of 0.000001846? 18.46 x 10^-5 1.846 × 10^-6 1.846 × 10^6 1.846 × 10^-5 None 23. Which of the following describes a decomposition reaction? Chemicals are burned in oxygen Chemicals combine to form products Chemicals switch ions Chemicals are broken apart to form products None 24. Which intermolecular force is the strongest? Dipole-dipole interactions Ionic bonds Dispersion forces Hydrogen bonds None 25. Which element on the periodic table has 8 protons? Carbon Boron Oxygen Nitrogen None 26. Which element does the electron configuration 1s2 2s2 2p4 represent? Nitrogen Oxygen Fluorine Carbon None 27. Which of the following subatomic particles are located in the nucleus? Protons and neutrons Positrons and electrons Electrons and neutrons Protons, neutrons, and electrons None 28. What is 540 Kelvin in degrees Celsius? 713.15 °C 266.85 °C 813.15°C 366.85 °C None 29. What is the other name for the metric system? International System of Units The Official Measurement System The Imperial System The English System None 30. Which of the following is correct? 273.15 Kelvin = 100 degrees Celsius 0 kelvin = 32 degrees Celsius 0 Kelvin = -273.15 degrees Celsius 100 Kelvin = 0 degrees Celsius None 1 out of 30 Time is Up! Time's up
