9. Electrons I 0. Evaporation 11. Cation ,.- 12. Atom VI_ Q] Iatom loses an 13. Given the balanced equation: Mg+02 MgO electron, it becomes a The reactants in the equation are ore positive B) \j:_ more negative 14. Which of the following is a diatomic molecule? C) neutral A) NaCl B) 02 C) none above (\ t1- 15 J{olutions are omogeneous B) heterogeneous C) odorless symbol does represent an ion? not 0 0 .()" B) C) CI- ca+ <- o c'V\ Q() I 7. Which pair forms a heterogeneous mixtur . A) coffee and water B) sugar and watel and vinegar 19. What is the charge of an ion having 6 protons and 3 electrons formed from a single atom? A) 2· B) 3+ C) 4· \ Use the following to answer questions 20-21 (_ _) • Identify the mixture with the definition. A) solution B) suspension - 20. Salt water 1. Italian dressing ·_ 22. What is the relationship between the temperature of river water and he concentration of dissolve oxygen? f '\W v 1 \)
9. Electrons I 0. Evaporation ,.- 11. Cation 12. Atom Q] 13. Given the balanced equation: Mg+02 MgO The reactants in the equation are \j:_ 14. Which of the following is a diatomic molecule? (\ A) NaCl B) 02 C) none above t1- 15 J{olutions are omogeneous B) heterogeneous C) odorless symbol does not represent an ion? B) ca+ C) CI- I 7. Which pair forms a heterogeneous mixtur . A) coffee and water B) sugar and watel and vinegar VI_ Iatom loses an electron, it becomes a ore positive B) more negative C) neutral 0 0 .()" c'V\ Q() <- o 19. What is the charge of an ion having 6 protons and 3 electrons formed from a single atom? A) 2· B) 3+ C) 4· \ • Use the following to answer questions 20-21 (_ _) Identify the mixture with the definition. A) solution B) suspension - 20. Salt water 1. Italian dressing ·_ 22. What is the relationship between the temperature of river water and he concentration of dissolve oxygen? v f '\W 1 \)
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