1. A spontaneous chemical reaction

Question

requires higher temperatures to occur
has no activation energy
occurs without any input of energy ***
increases entropy

2. S is
the total kinetic movement in a system
the full range of motions in a system***
the average kinetic movement in a system
the opposite of the Heisenberg Uncertainty Principle

3. A new car will eventually fall apart no matter how well you take care of it. This is best explained by using
the Second Law of Thermodynamics
the Third Law of Thermodynamics
Gay-Lussac's Law
the First Law of Thermodynamics***

4. Which is the best illustration of the Second Law of Thermodynamics?
frost forms on the outside of an ice cube
an ice cube in a freezer slowly shrinks***
an ice cube freezes
an ice cube melts then re-freezes

Answer 1

I agree with 1 (with a caveat), 2 and 4 but not 3. The caveat on 1 is that energy must come from somewhere and that is the system; i.e., the energy is already there in EXCESS so the reaction uses what it needs and the excess is left over. In 1 I think the choices are just not explained very well. In 3 I think the conservation of energy certainly is correct and will be conserved as the car degenerates; however, I don't think that explains why it degenerates in the first place.