lesson 1
elements
100
a chart of the elements arranged into rows and columns according to their physical and chemical properties .
What is the periodic table
100
the abbreviation for hydrogen
What is "H"?
200
a Russian chemist and teacher in 1869
who is Dimiti Mendeleev?
200
_______ is the only metal that is a liquid at room temperature.
mercury
300
"repeating pattern"
What is periodic
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