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Ch. 7 Clicker Review
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Cations are formed when neutral
☺ A. atoms lose electrons B. atoms gain electrons C. atoms gain protons D. atoms lose neutrons
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The formula for magnesium oxide is
☺ A. MgO B. Mg2O C. MgO2 D. Mg2O2
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Valence electrons are found in the _____ energy level of an atom.
A. innermost B. weakest C. outermost D. lowest ☺
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Which element has one less valence electron than Carbon?
A. Be B. N C. Si D. B ☺
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Which atom or ion has the electron configuration of a noble gas?
A. Mg1+ B. Cu C. S D. Ca2+ ☺
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The formula for Lithium Oxide would be
A. LiO B. LiO2 C. Li2O2 D. Li2O ☺
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Which element has three valence electrons?
☺ A. Al B. Si C. Ge D. S
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Which element would be used to write the noble gas configuration of Aluminum?
A. He B. Ne C. Kr D. Ar ☺
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The correct formula for Calcium Nitride would be
☺ A. Ca3N2 B. Ca2N3 C. CaN D. Ca2N2
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Electrons are __, neutrons are __ and protons are __
A. positive, negative, neutral B. negative, positive, neutral C. positive, neutral, negative D. negative, neutral, positive ☺
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Which is the correct electron dot structure for Nitrogen?
A. B. C. D. ☺
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What is the correct electron dot structure for the oxygen ion
B. C. D. ☺
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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 ☺
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What is the electron configuration of Cl-?
☺ A. 1s22s22p63s23p6 B. 1s22s22p63s23d6 C. 1s22s22p63s24p6 D. 1s22s22p63s23p5
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An oxygen ion has the same number of electrons as a neutral atom of
A. He B. Ne C. Ar D. Kr ☺
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A(n) ______ has superior properties to the metals they are composed of.
A. alkali metal B. alloy C. alkaline earth metal D. noble gas ☺
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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 ☺
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_______ are formed when neutral atoms gain electrons.
☺ A. anions B. cations C. atoms D. metals
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Ionic compounds when dissolved in water ___
A. melt B. conduct electricity C. heat up D. cool down ☺
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How many electrons does the copper ion have when it forms the ionic compound CuCl2?
B. 28 C. 27 D. 26 ☺
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What kind of bond involves the transfer of electrons?
A. covalent B. ionic C. complex D. metallic ☺
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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- ☺
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The Ca2+ ion contains __ electrons.
B. 19 C. 18 D. 17 ☺
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An ion that has 9 protons and 10 electrons is
A. Ne+ B. F+ C. Ne- D. F- ☺
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Cations are __ and Anions are ___
A. negative, positive B. positive, negative C. neutral, negative D. positive,neutral ☺
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Representative elements lose or gain electrons to gain the ___ of a noble gas.
A. electronegativity B. ionization energy C. atomic radius D. electron configuration ☺
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__ play a necessary function in chemical reactions called bonding.
A. protons B. electrons C. neutrons D. alpha particles ☺
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