How are the elements organized?

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Presentation transcript:

How are the elements organized?       Welcome to the periodic table

How are the Elements Organized? By mid-1800s, scientists has identified nearly 60 elements. They needed a classification system that would organized their observations. They started grouping elements into “families” based on similar properties. Mendeleev was a Russian teacher and chemist, youngest of 17 children

Dmitri Mendeleev (1834-1907) He knew that properties of elements tended to repeat over regular intervals. Wrote the properties of elements on cards to rearrange and compare Realized that he needed to leave gaps in his arrangement – blank spaces predicting the existence of elements not yet found. The gaps helped him accurately predict properties of elements not yet known. Mendeleev was a Russian teacher and chemist, youngest of 17 children

Patterns of the Periodic Table Crash Course Video https://www.youtube.com/ watch?v=0RRVV4Diomg

Periodic Table Song ASAP Science https://www.youtube.com/watch?v=rz4Dd1I_fX0

Think it’s easy? Create your own Periodic Table Create your own PT PT Colouring WS

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