___ is an application software for the study of chemistry. That is different clements etc.

__________ is a 3D astronomy program 

_________calculates elemental compositon and molecular weight of compounds from their chemical formula.

Software used to represent day and night at a given time

_____ is an utility software used to design chemical reactions, molecaler structure etc.

________means to enlarge somthething.

__________ is a periodic table viewer that provides detailed information on the chemical elements.

___________ is a periodic table application for Linux.

__________ is a planetarium program