An ice sculpture melts into a puddle of water. what is true of this reaction? it is spontaneous. energy had to be added to the system for the reaction to occur. the reaction happens faster if the ice sculpture is large. no work is done in this reaction.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.