This Chemistry Tutor Competency Quiz assesses knowledge in chemical reactions, properties of matter, and separation techniques. It evaluates understanding of endothermic vs. Exothermic reactions, intensive properties, chromatography, nuclear fission, and molecular orbital theory, essential for advanced chemistry studies.
CO₂, H₂O, NH₃
H₂, N₂, O₂
H₂, Ne, NaCl
MgO, NaCl, O₂
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No Charge
Positive Charge
Negative Charge
Either a Positive or Negative Charge
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Three sigma bonds
One sigma and two pi bonds
Three pi bonds
Two sigma and one pi bond
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Energy is conserved in endothermic reactions but is not conserved in exothermic reactions.
Endothermic reactions involve changes in the nucleus of an atom, but exothermic reactions do not involve changes in the nucleus.
Energy is absorbed in endothermic reactions but is released in exothermic reactions.
Endothermic reactions occur when electrons are shared between atoms, but exothermic reactions occur when electrons are transferred between atoms.
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Mass
Volume
Density
Length
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Nuclear fusion
Nuclear fission
Radioactive decay
None of the above
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6 days
8 days
12 days
14 days
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CH₄ + 2O₂ ==> CO₂ + 2H₂O
H₂SO₄ + Ca(OH)₂ ==> CaSO₄ + 2H₂O
MgCrO₄ + BaCl₂ ==> MgCl₂ + BaCrO₄
Zn(NO₃)₂ + Na2CO₃ ==> 2NaNO₃ + ZnCO₃
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Sodium
Boron
Helium
Carbon
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1, 0, and 0
1, 0, and ½
1, ½, and ½
1, ½, and 0
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Nitrogen pentoxide
Dinitrogen pentoxide
Nitrous oxide
Pentaoxidgen dinitride
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32 degrees
37 degrees
39 degrees
40 degrees
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0.060 mole
0.12 mole
0.24 mole
0.30 mole
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0.5 g/cm3
0.50 g/cm3
2.0 g/cm3
2.00 g/cm3
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