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.
Mass
Volume
Density
Length
Chromatography
Separating funnel
Centrifugation
Simple distillation
Nuclear fusion
Nuclear fission
Radioactive decay
None of the above
1, 0, and 0
1, 0, and ½
1, ½, and ½
1, ½, and 0
Three sigma bonds
One sigma and two pi bonds
Three pi bonds
Two sigma and one pi bond
Nitrogen pentoxide
Dinitrogen pentoxide
Nitrous oxide
Pentaoxidgen dinitride
CO₂, H₂O, NH₃
H₂, N₂, O₂
H₂, Ne, NaCl
MgO, NaCl, O₂
0.5 g/cm3
0.50 g/cm3
2.0 g/cm3
2.00 g/cm3
6 days
8 days
12 days
14 days
32 degrees
37 degrees
39 degrees
40 degrees
CH₄ + 2O₂ ==> CO₂ + 2H₂O
H₂SO₄ + Ca(OH)₂ ==> CaSO₄ + 2H₂O
MgCrO₄ + BaCl₂ ==> MgCl₂ + BaCrO₄
Zn(NO₃)₂ + Na2CO₃ ==> 2NaNO₃ + ZnCO₃
No Charge
Positive Charge
Negative Charge
Either a Positive or Negative Charge
Sodium
Boron
Helium
Carbon
0.060 mole
0.12 mole
0.24 mole
0.30 mole