Dmitri Mendeleev is a great Russian scientist of the 19th century.He is recognized as a great chemist who created the periodic classification of the elements.Dmitri Mendeleev was born in Tobolsk in 1834. At school,Dmiti succeed in mathematics,physics,and geography but was not good at languages.In 1855 he graduated from Pedagogical institute in St Peterburg with a gold medal for his achievements .In 1856,he received a degree in chemistry.Dmitri Mendeleev's contribution to the world's science was enormous. He was the first created the dependence of the qualities of the elements on their atomic weight.He forecast that the gaps in the table of elements would be filled in by elements which had not been discovered yet.Dmitri Mendeleev was greatly honoured as a member of academies in many countries.Elements No 101 was named after him.
Match the word and its defintion
1 hard -working - c) working with a lot of effort
2 punctual - a) done at exactly the time that has been arranged
3 reliable - f) someone or something that can be trusted or depended on
4 clever - g) able to learn and understand things quickly
5 flexible - e) a person,plan etc that can change or be changed easility to suit any new situation
6 ambitious - b) determined to be successful rich ,powerful and etc
7 common-sense - d) the ability to make practical decisions