Sciencespeaking topic
Why was it such a triumph that Mendeleev, in building the periodic table, could predict the properties of elements not yet discovered?
— Dmitri Mendeleev, the periodic table (1869)
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
similar topics
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