Scientists 1
Scientists 2
Periodic Table of Elements 3
Periodic Table of Elements & isotopes
Isotopes and Average Atomic Mass (AAM)
100
The physicist who discovered the electron?
Thomson
100
The tiny positive core of an atom that contains protons and neutrons, and makes up all the mass of an atom?
Nucleus
100
# of electrons of Magnesium?
12
100
If a stable elements has 20 protons, how many electrons will it have?
20
200
The physicist who discovered the neutron?
Chadwick
200
English Chemist and schoolteacher who came up with the first atomic model?
Dalton
200
Chemical symbol of Magnesium?
Mg
200
# of neutrons of Mercury?
121
200
Write the "nuclear symbol" below in "hyphen notation": 32 P 15
Phosphorus-32
300
The Greek philosopher who said atoms are indivisible and indestructible?
Democritus
300
Student of Ernest Rutherford?
James Chadwick
300
Atomic # of Mercury?
80
300
Is Potassium a metal, nonmetal, or metalloid?
Metal
300
Express the "nuclear symbol" below in "hyphen notation": 12 C 6
Carbon-12
400
Performed the Gold-Foil experiment?
Rutherford
400
The scientific figure on which "Jimmy Neutron boy genius" is based?
James Chadwick
400
Mass # of Fluorine?
19
400
Is Mercury a solid, liquid, or gas?
liquid
400
Radon has 86 protons and 140 neutrons. Express this in hyphen notation?
Radon-226
500
U.S. physicist who performed the Oil Drop experiment?
Millikan
500
Proposed the "plum-pudding" model of the atom.
Thomson
500
# of protons of Potassium?
19
500
How many neutrons in an isotope of Uranium-240?
148 neutrons
500
What is the nuclear symbol of Europium-155?
155 Eu 63
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