Is a pill bug decomposer consumer or a producer??

It would be a producer. Organism that get energy by feeding on dead materials and wastes are called decomposers. Earthworms, centipedes, and pill bugs break dead leaves into tiny pieces as they feed. ... Producers capture the energy in sunlight to make their own food. The plant then stores the energy.

Sugar and water are chemically combined.(a solution is chemically combined while a mixture is mixed together without bonding the molecules)

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.