Which correctly describes the laws of conservation?
a. mass is not conserved in a chemical reaction.
b. energy is not conserved in a nuclear reaction.
c. mass is conserved in a nuclear reaction.
d. energy is not conserved in a chemical reaction.

                                                       A is the answer

Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics apply to only that topic.

as the atomic numbers of the elements in column iia increase, the size of the atoms generally: increase stay the same- a.