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Which of the following is an example of an empirical formula?


A) C9H12
B) C9H18Cl2
C) C6H6
D) N2O4
E) C2H2O2

F) A) and E)
G) C) and E)

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Name the following compound: K3PO4.

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Which one of the following elements is most likely to form a 2+ ion?


A) calcium
B) carbon
C) fluorine
D) oxygen
E) sodium

F) B) and C)
G) A) and E)

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  -Use the periodic table above to show where the halogen elements are located. -Use the periodic table above to show where the halogen elements are located.

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Group 7A o...

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Name the following binary compound: MnCl2.

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manganese(...

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Name the following binary compound: FeS.

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iron(II)su...

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Write the formula of ammonia.

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Complete the following chart, in order from left to right Complete the following chart, in order from left to right   A) (<sup>40</sup>Zr, 21)  B) (<sup>19</sup>K, 40)  C) (<sup>21</sup>K, 19)  D) (<sup>40</sup>K, 21)  E) (<sup>38</sup>Sr, 19)


A) (40Zr, 21)
B) (19K, 40)
C) (21K, 19)
D) (40K, 21)
E) (38Sr, 19)

F) B) and D)
G) C) and E)

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The proton is about 1840 times heavier than the electron.

A) True
B) False

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Which of the following elements is most likely to be a good conductor of electricity?


A) N
B) S
C) He
D) Cl
E) Fe

F) All of the above
G) A) and D)

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How many electrons, protons, and neutrons does an iron-55 atom have?

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26 electro...

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What is ammonia and ammonium ion, in that order?

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Give the formula for potassium oxide.

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What is the nitride ion, nitrate ion, and nitrite ion, in that order?

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What is the formula for the ionic compound containing calcium ions and nitrate ions?


A) Ca3N2
B) Ca(NO3) 2
C) Ca2NO3
D) Ca2NO2
E) CaNO3

F) C) and D)
G) A) and B)

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What are the two different ions present in the compound NH4NO3?


A) NH4-, NO3+
B) NH4+, NO3-
C) N3-, H+, O2-
D) NH43+, NO4-
E) NH4+, NO3-

F) A) and C)
G) B) and D)

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What is the sulfide ion, sulfate ion, and sulfite ion, in that order?

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When a beam of alpha particles passes between two electrically charged plates, the beam is deflected toward the positive plate.

A) True
B) False

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Give the number of protons (p) , neutrons (n) , and electrons (e) in one atom of 238U.


A) 146 p, 92 n, 92 e
B) 92 p, 92 n, 92 e
C) 92 p, 146 n, 92e
D) 146 p, 28 n, 146 e
E) 238 p, 146 n, 238 e

F) B) and E)
G) None of the above

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An oxide ion, O2-, has:


A) 8 protons and 10 electrons
B) 10 protons and 8 electrons
C) 8 protons and 9 electrons
D) 8 protons and 7 electrons
E) 10 protons and 7 electrons

F) A) and B)
G) A) and C)

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