Read the descriptions of physical or chemical changes in the table below. Then decide whether the change will be spontaneous, if you can.
Change
Is this change spontaneous?
During an exothermic chemical reaction, a solid is consumed and a gas produced.
O Yes.
O No.
O Can't decide with information given.
A solid precipitates from a solution, releasing heat as it does so.
O Yes.
O No.
O Can't decide with information given.
During an endothermic chemical reaction, four moles of gaseous reactants are turned into two moles of gaseous products.
O Yes.
O No.
O Can't decide with information given.