HESI A2: Chemistry (Quiz 5) 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 5): Chemistry. (30 questions) Please click NEXT to start your Free HESI Practice Quizzes right away. Best of Luck! 1. Which of the following numbers does the prefix “deka” represent? 1,000 0.01 10 100 None 2. Which of the following occurs at 100°C? Pure water sublimes Pure water boils Ice melts Pure water freezes None 3. Which of the following options correctly shows 4,752,100 in scientific notation? 4.7521 x 10^5 4.7521 x 10^-6 4.7521 x 10^6 4.7521 x 10^-5 None 4. Which option correctly converts 4.51 × 10^-5 to standard notation? 0.00000451 0.0000451 4,510,000 4,510 None 5. Which option correctly translates 5.67 × 10^8 into standard form? 567,000,000 5,670,000,000 0.0000000567 56,700,000 None 6. Which of the following options represents the SI base unit of mass? Pound Ounce Kilogram Gram None 7. Which option is the correct scientific notation of 734,000,000? 7.34 x 10^8 7.34 × 10^-8 7.34 × 10^7 7.34 × 10^-7 None 8. Which of the following is a property of noble gases? They have a -1 charge They have a full octet of valence electrons They are highly reactive They are easily ionized None 9. Which of the following is represented by the atomic number of an element? An element’s number of protons and neutrons An element’s number of neutrons An element’s number of protons, neutrons, and electrons An element’s number of protons None 10. Which of the following is the correct symbol for arsenic? Al As At Ar None 11. Which of the following isotopes of iron has 26 protons, 30 neutrons, and 26 electrons? 56Fe 26Fe 30Fe 55Fe None 12. Which of the following represents an ion? 6 protons, 6 neutrons, and 6 electrons 6 protons, 4 neutrons, and 5 electrons 6 protons, 5 neutrons, and 6 electrons 6 protons, 4 neutrons, and 6 electrons None 13. Which subatomic particle has a positive charge? Protons Electrons Neutrons Photons None 14. Which of the following is a true statement? Protons have a positive charge. Electrons have a positive charge. Neutrons orbit the nucleus. Electrons are located in the nucleus. None 15. Which of the following describes a catalyst? A gas that evolves from the reaction A solid that precipitates out of a reaction A substance that slows down a reaction. A substance that increases the rate of a chemical reaction None 16. Which of the following is not an example of a solution? Alloy Unsaturated Emulsion Saturated None 17. Which state of matter can contain a solution? Gases and solids Liquids and gases Solids, liquids, and gases Solids and liquids None 18. Which of the following is not an example of an alloy? A mixture of copper and aluminum A mixture of silver and gold A mixture of bromine and oxygen A mixture of iron and lead None 19. Which of the following describes a non-polar covalent bond? An even sharing of electrons between atoms An uneven sharing of protons between atoms An even sharing of protons between atoms An uneven sharing of electrons between atoms None 20. Which of the following describes a single covalent bond? A bond that shares a single proton A bond that shares no electron pairs A bond that shares two electron pairs A bond that shares one electron pair None 21. Which of the following has an ionic bond? NaCl H2O2 C6H12O6 H2O None 22. Which of the following is not an intermolecular force? Hydrogen bond Dipole-dipole interaction Metallic bond Dispersion force None 23. Which of the following is the correct term for chemicals on the left side of the reaction arrow? Products Equation Reactants Ions None 24. Which of the following substances has the ability to form strong hydrogen bonds? C6H6 H20 CH4 BF3 None 25. During oxidation, what happens to a chemical species? It loses one mole of oxygen It gains electrons It gains one mole of oxygen It loses electrons None 26. Which of the following occurs during a redox reaction? One species is reduced, while another is oxidized The number of electrons in a reaction increases All chemicals are reduced All chemicals are oxidized None 27. Which of the following is a property of bases? They corrode metals They taste sour They have pka values below 7. They change red litmus paper to blue None 28. Lemon juice contains citric acid. Which of the following pH values would lemon juice most likely have? 2 7 14 8 None 29. What type of bonds hold polysaccharides together? Double bonds Glycosidic bond Alkenes Esters None 30. Where are triglycerides stored? Skin cells Fat cells Blood Bones None 1 out of 30 Time is Up! Time's up
