The Black Death was an outbreak of bubonic plague that lasted from about 1347 to 1352. The first cures of bubonic plague did not happen until effective antibiotics were develo â¦ ped in the 20th century. Throw sweet smelling herbs onto the fire to clean the air. 2  Carry pockets of sweet-smelling herbs. 3  Plague-proofing homes by putting glazes over southern windows to block the polluted southern wind. 4  Sit in a sewer so the bad air of the plague is driven off by the even worse one of the sewer.
Chemical element. A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, or Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.
periodic table 265 pages on this wiki the periodic table of elements more commonly abbreviated to the periodic table is a graphic representation of all elements known to science including the 92 naturally occuring elements and several artificially created elementsit currently displays elements from 1 hydrogen to 118 ununoctiumhere were several versions of the periodic table in the 19th century however the current version in use dmitri mendeleev is the scientist to whom credit is given to he developed the table in 1869 to include the then known elements