Senior Congregate Care. What is congregate housing? Congregate housing is an environment thatâs designed to cater for the housing needs of seniors and disabled persons. Residents of a congregate housing complex have private apartments but share a common dining room, kitchen facilities, and other amenities. The purpose of this arrangement is to allow seniors to continue living an independent life although assisted with such tasks like cooking.
The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today. Mendeleev arranged the elements by atomic mass, corresponding to relative molar mass.
Henry Moseley created the modern periodic table by putting the elements in order by atomic number. Dmitri Mendeleev made the first periodic table that could successfully predi â¦ ct future elements, but ordered his elements by atomic mass, which we do not do today.endeleev first created the periodic table in 1869.  He thought that the elements must be organised in some way, that we would be able to use for experiments. And he first t â¦ hought of the periodic table. He tried and tried but could not get them all to fit.