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9. Which species represents a chemical compound? (1) N₂ (2) NHẠ* 2B-2 lonic Charge (3) Na (4) NaHCO3 (3 Questions) neutral (no charge) Protons have a +1 charge (46 10. Which list of formulas represents compounds, only? (3) H₂, Ne, NaCl (4) MgO, NaCl, O₂ (1) CO2, H₂O, NH3 (2) H₂, N₂, 0₂

9. Which species represents a chemical compound? (1) N₂ (2) NHẠ* 2B-2 lonic Charge (3) Na (4) NaHCO3 (3 Questions) neutral (no charge) Protons have a +1 charge (46 10. Which list of formulas represents compounds, only? (3) H₂, Ne, NaCl (4) MgO, NaCl, O₂ (1) CO2, H₂O, NH3 (2) H₂, N₂, 0₂

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(1) N₂ (2) NHất 9. Which species represents a chemical compound? 2B-2 lonic Charge (1) 1+ (2) 2+ (3 Questions) Protons have a +1 charge, electrons a -1 charge while neutrons are neutral (0). (# of protons) - (# of electrons) = lonic Charge 11 neutrons, and 10 electrons? 11. What is the net charge on an ion that has 9 protons, cally combined. trically neutral (no charge) (3) Na (4) NaHCO3 (1) 02- (2) Si (3) 1- (4) 2- 13. Which symbol represents a particle that has the same total number of electrons as S2-? (1) fluoride ion (2) sodium ion 2B-3 Counting Electrons Electrons (7 Questions) The atomic number is equal to the number of protons in an atom. Atoms are neutral having the same number of electrons. The following formula can be used to determine the number of electrons in an ion. (Atomic Number)- (Charge) = Number of Electrons (Remember minus(-) a minus(-) is a positive(+)) (3) Se²- (4) Ar 15. What is the name of the polyatomic ion in the compound Na2O₂? (1) hydroxide (2) oxalate (1) gains a proton (2) gains an electron (3) oxide (4)_ peroxide 10. Which list of formulas represents compounds, only? (1) CO2, H₂O, NH3 (2) H₂, N2, 02 (3) neon atom (4) argon atom 2B-4 Polyatomic lons (3 Questions) A polyatomic ion is a group of atoms that are covalently bonded together and have a charge The polyatomic ions are listed in Table E 19. When a fluorine atom forms an F- ion, the fluorine atom 12. What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons? (1) 1+ (2) 2+ (3) loses a proton (4) loses an electron Grover Cleveland High School (3) H₂, Ne, NaCl (4) MgO, NaCl, O₂ (1) N (2) N3+ (3) 1- (4) 2- 14. Which symbol represents a particle with a total of 10 electrons? 2B-5 Ion Electron Configuration (4 Questions) lon electron configuration of an atom is similar to the electron configuration of its closest Nobel gas. This provides stability to the ion. 17. Which particle has the same electron configuration as 18. Which electron configuration is correct for a sodium a potassium ion? ion? (3) AI (4) A13+ 16. Which polyatomic ion contains the greatest number of oxygen atoms? (1) acetate (2) carbonate (1) 2-7 (2) 2-8 (3) hydroxide (4) peroxide 2B-6 lon Formation (4 Questions) Atoms become negative ions when they gain electrons. Atoms become positive ions when they lose electrons. (3) 2-8-1 (4) 2-8-2 20. Compared to a calcium atom, the calcium ion Ca2+ ha (1) more protons (3) more electrons (2) fewer protons (4) fewer electrons Page 14
Transcribed Image Text:(1) N₂ (2) NHất 9. Which species represents a chemical compound? 2B-2 lonic Charge (1) 1+ (2) 2+ (3 Questions) Protons have a +1 charge, electrons a -1 charge while neutrons are neutral (0). (# of protons) - (# of electrons) = lonic Charge 11 neutrons, and 10 electrons? 11. What is the net charge on an ion that has 9 protons, cally combined. trically neutral (no charge) (3) Na (4) NaHCO3 (1) 02- (2) Si (3) 1- (4) 2- 13. Which symbol represents a particle that has the same total number of electrons as S2-? (1) fluoride ion (2) sodium ion 2B-3 Counting Electrons Electrons (7 Questions) The atomic number is equal to the number of protons in an atom. Atoms are neutral having the same number of electrons. The following formula can be used to determine the number of electrons in an ion. (Atomic Number)- (Charge) = Number of Electrons (Remember minus(-) a minus(-) is a positive(+)) (3) Se²- (4) Ar 15. What is the name of the polyatomic ion in the compound Na2O₂? (1) hydroxide (2) oxalate (1) gains a proton (2) gains an electron (3) oxide (4)_ peroxide 10. Which list of formulas represents compounds, only? (1) CO2, H₂O, NH3 (2) H₂, N2, 02 (3) neon atom (4) argon atom 2B-4 Polyatomic lons (3 Questions) A polyatomic ion is a group of atoms that are covalently bonded together and have a charge The polyatomic ions are listed in Table E 19. When a fluorine atom forms an F- ion, the fluorine atom 12. What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons? (1) 1+ (2) 2+ (3) loses a proton (4) loses an electron Grover Cleveland High School (3) H₂, Ne, NaCl (4) MgO, NaCl, O₂ (1) N (2) N3+ (3) 1- (4) 2- 14. Which symbol represents a particle with a total of 10 electrons? 2B-5 Ion Electron Configuration (4 Questions) lon electron configuration of an atom is similar to the electron configuration of its closest Nobel gas. This provides stability to the ion. 17. Which particle has the same electron configuration as 18. Which electron configuration is correct for a sodium a potassium ion? ion? (3) AI (4) A13+ 16. Which polyatomic ion contains the greatest number of oxygen atoms? (1) acetate (2) carbonate (1) 2-7 (2) 2-8 (3) hydroxide (4) peroxide 2B-6 lon Formation (4 Questions) Atoms become negative ions when they gain electrons. Atoms become positive ions when they lose electrons. (3) 2-8-1 (4) 2-8-2 20. Compared to a calcium atom, the calcium ion Ca2+ ha (1) more protons (3) more electrons (2) fewer protons (4) fewer electrons Page 14
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