ATOMS Flashcards
materials that offer zero resistance to electrical current
SUPERCONDUCTORS
superconductors are produced at extremely _____ temperature
COLD
_____ and _____ created superconductors
VITALI PRAKAPENKA
ERAN GREENBERG
vitali prakapenka and eran greenberg are from _____
UNIVERSITY OF CHICAGO
proposed that matter is composed of tiny particles that cannot be divided
GREEK: LEUCIPPUS AND DEMOCRITUS
atomos=
UNCUTTABLE
proposed atomic theory of matter
JOHN DALTON
matter = small particles called atoms
ATOMIC THEORY OF MATTER
initiated the acceptance of meteorology as a scientific pursuit rather than a topic of general folklore
JOHN DALTON
book that john dalton wrote=
METEOROLOGICAL OBSERVATION AND ESSAYS
formed when atoms of different elements chemically combine
COMPOUND
can capture images showing marble like atoms
SCANNING TUNNELING MICROSCOPE
british physicist
J.J. THOMSON
what is the model of atom called
PLUM PUDDING MODEL
discovered electron
J.J. THOMSON
atoms are electrically _____
NEUTRAL
new zealand born british psychist
ERNEST RUTHERFORD
what experiment did ernest rutherford do
GOLD FOIL EXPERIMENT
he concluded that an atom is made up of very dense positively charged nucleus surrounded by empty space
ERNEST RUTHERFORD
who identified positively charged protons
ERNEST RUTHERFORD
who discovered uncharged neutrons in nucleus
JAMES CHADWICK
danish physicist=
NIELS BOHR
while studying the line spectrum of hyfrogen, he realized that electrons in an atom exist in specific regions
NIELS BOHR
who theorized that electrons have several possible orbits at different distances from nucleus
NIELS BOHR
when electrons in an atom are in their lowest energy level
GROUND STATE
atoms=
PROTONS
ELECTRONS
NEUTRONS
proton=
neutron=
electron=
POSITIVELY CHARGED/ BOUND IN NUCLEUS OF ATOM
NEUTRAL/ BOUND IN NUUCLEUS OF ATOM
NEGATIVE/ REVOLVE AROUND NUCLEUS
describe probability of finding electron within given orbitals
QUANTUM MECHANICAL MODEL
energy levels=
ELECTRON SHELLS
energy letters
S P D F// A
subshells contain
ORBITALS
simplest orbitals
S
P
pictures electron spinning clockwise or counterclockwise in orbitals
QUANTUM MECHANICAL MODEL
A
A
