Is the osmosis egg challenge a chemical reaction? If so, was the stored energy in the reactants released (exothermic) or absorbed (endothermic) during this physical change?
If not, was energy released (exothermic) or absorbed (endothermic) by the molecules during this physical change?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

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.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?