People
Protons
Theories
Atoms
People
100
discovered first plastic
Who is Hyatt
100
type of energy charged
What is positively
100
a theory is...
What is a unifying explanation for a broad range of hypotheses and observations?
100
an atom is...
what is the smallest particle?
100
theorized atoms
Who is Datlon
200
discovered synthetic plastic
Who is Baekeland
200
discovered by...
Who is Ruthereford
200
said that if you cut a silver coin in half again and again that eventually you would end up with an "uncuttable" particle
Who is Democritus?
200
atoms were not visible until this year
What is 1981?
200
invented line structure
Who is Kekule
300
discovered molecules
Who is Gay-Lussac
300
symbol for a proton
What is p
300
said that you would never end up with an indivisible particle
Who is Aristotle?
300
the idea of the atom has been around for ______ years
What is more than 2000?
300
created the spectroscope
Who is Bunson and Kercoff
400
discovered oxygen
Who is Priestly
400
mass
What is 938.3 MeV
400
John Dalton's theory stated...
What is all substances are made of atoms, atoms cannot be created, divided, or destroyed, atoms of the same element are exactly alike and atoms of different elements are different, and atoms join with other atoms to make new substances?
400
came from the Greek word....
What is atomos?
400
invented electro chemistry
Who is Davey
500
discovered electrons
Who is Thomson
500
charge
What is +1
500
J.J. Thomson discovered...
What is atoms can be divided into even smaller particles?
500
atoms are considered to be....
What are the building blocks of matter?
500
discovered "valence"
Who is Lewis
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