Describe any differences temperature has on the solubility of epsom salts as compared to table salt

Define dew point. i am writing this part to be able to ask the question

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

Which description best characterizes the motion of particles in a solid?