Exploring Chemistry Chapters 5-7 Flashcards
Henry Cavendish combined oxygen with nitrogen by using
an electric spark
The first college that Dmitri Mendeleev attended was one
to train teachers
Current electricity is due to the motion of
electrons
Dmitri Mendeleev organized his table of the elements by ___ and ___.
atomic weight, valance
Dmitri Mendeleev set about organizing the table of elements by
writing information about the elements on note cards
___ helps make light bulbs last longer.
Argon
Davy discovered potassium by treating potash with
electricity from a strong battery
Was static electricity known or unknown to the ancient Greeks?
no
The one who unwisely tasted and sniffed new chemicals was
Humphry Davy
How many of Mendeleev’s missing elements have been found?
all 3
To silence critics of his table, Mendeleev
predicted the properties of three missing elements
The name helium means from
the sun
Dmitri Mendeleev was born in
Russia
An arc light generates light as electricity jumps across the gap between two ____ electrodes.
carbon
Fraunhofer saw the ___ while testing the quality of a prism.
lines in the spectrum
