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.
The periodic table is a display of all of the chemical elements in a table form. It was invented by the chemist Dmitri Mendeleev in 1869. His intention was to illustrate recur â¦ ring (periodic) trends in the properties of the elements.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.