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Ch. 7 Clicker Review

Ch. 7 Clicker Review. Cations are formed when neutral. ☺. A. atoms lose electrons B. atoms gain electrons C. atoms gain protons D. atoms lose neutrons. The formula for magnesium oxide is. ☺. A. MgO B. Mg 2 O C. MgO 2 D. Mg 2 O 2.

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Ch. 7 Clicker Review

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  1. Ch. 7 Clicker Review

  2. Cations are formed when neutral ☺ • A. atoms lose electrons • B. atoms gain electrons • C. atoms gain protons • D. atoms lose neutrons

  3. The formula for magnesium oxide is ☺ • A. MgO • B. Mg2O • C. MgO2 • D. Mg2O2

  4. Valence electrons are found in the _____ energy level of an atom. • A. innermost • B. weakest • C. outermost • D. lowest ☺

  5. Which element has one less valence electron than Carbon? • A. Be • B. N • C. Si • D. B ☺

  6. Which atom or ion has the electron configuration of a noble gas? • A. Mg1+ • B. Cu • C. S • D. Ca2+ ☺

  7. The formula for Lithium Oxide would be • A. LiO • B. LiO2 • C. Li2O2 • D. Li2O ☺

  8. Which element has three valence electrons? ☺ • A. Al • B. Si • C. Ge • D. S

  9. Which element would be used to write the noble gas configuration of Aluminum? • A. He • B. Ne • C. Kr • D. Ar ☺

  10. The correct formula for Calcium Nitride would be • A. Ca3N2 • B. Ca2N3 • C. CaN • D. Ca2N2 ☺

  11. Electrons are __, neutrons are __ and protons are __ • A. positive, negative, neutral • B. negative, positive, neutral • C. positive, neutral, negative • D. negative, neutral, positive ☺

  12. Which is the correct electron dot structure for Nitrogen? • A. • B. • C. • D. ☺

  13. What is the correct electron dot structure for the oxygen ion • A. • B. • C. • D. ☺

  14. What is modeled as a sea of electrons? • A. valence electrons in non metals • B. valence electrons in gases • C. valence electrons in solids • D. valence electrons is metals ☺

  15. What is the electron configuration of Cl-? ☺ • A. 1s22s22p63s23p6 • B. 1s22s22p63s23d6 • C. 1s22s22p63s24p6 • D. 1s22s22p63s23p5

  16. An oxygen ion has the same number of electrons as a neutral atom of • A. He • B. Ne • C. Ar • D. Kr ☺

  17. A(n) ______ has superior properties to the metals they are composed of. • A. alkali metal • B. alloy • C. alkaline earth metal • D. noble gas ☺

  18. The ______of an ion is equal to the sum of the positive charge of each proton and the negative charge of each electron. • A. mass • B. energy • C. charge • D. electronegativity ☺

  19. _______ are formed when neutral atoms gain electrons. ☺ • A. anions • B. cations • C. atoms • D. metals

  20. Ionic compounds when dissolved in water ___ • A. melt • B. conduct electricity • C. heat up • D. cool down ☺

  21. How many electrons does the copper ion have when it forms the ionic compound CuCl2? • A. 29 • B. 28 • C. 27 • D. 26 ☺

  22. What kind of bond involves the transfer of electrons? • A. covalent • B. ionic • C. complex • D. metallic ☺

  23. An atom with an electron configuration of 1s22s22p63s23p2 is most likely to form an ion that has a charge of • A. 2+ • B. 4+ • C. 3- • D. 2- ☺

  24. The Ca2+ ion contains __ electrons. • A. 20 • B. 19 • C. 18 • D. 17 ☺

  25. An ion that has 9 protons and 10 electrons is • A. Ne+ • B. F+ • C. Ne- • D. F- ☺

  26. Cations are __ and Anions are ___ • A. negative, positive • B. positive, negative • C. neutral, negative • D. positive,neutral ☺

  27. Representative elements lose or gain electrons to gain the ___ of a noble gas. • A. electronegativity • B. ionization energy • C. atomic radius • D. electron configuration ☺

  28. __ play a necessary function in chemical reactions called bonding. • A. protons • B. electrons • C. neutrons • D. alpha particles ☺

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