Periodic table

Periodic table

Assessment

Interactive Video

Science, Physics, Chemistry

6th - 12th Grade

Hard

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The periodic table is structured with elements arranged by increasing atomic numbers across rows, known as periods, and similar properties in vertical columns, called groups. This layout, largely unchanged since Dmitri Mendeleev's development in 1869, has been adapted over time.

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OPEN ENDED QUESTION

3 mins • 1 pt

What new insight or understanding did you gain from this video?

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