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PHY SCI test 3

Terms

undefined, object
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concept of the atomic number
moseley
transmutation
one element changes into another element
energy produced in the sun comes from
fusion of hydrogen
law of definite proportions
when one element combines with another to form a compound, they do so in definite composition by weight (mass)
gamma rays
electromagnetic transitions in the nucleus
value of solar constant
1
quantum mechanics
there can be no more than 2 electrons
law of multiple proportions
when 2 or more elements combine to form more than one compound
atomic mass
chemical properties of elements
the big bang theory
the expansion of the universe as we know it today
galaxies
large collection of stars
HR diagram displays
the spectral type of a star and its brightness
atomic number (Z)
number of protons in nucleus
John Dalton
developed the atomic theory
alkali metals
Li, Na, K, Rb
law of conservation of matter (mass)
in chemical composition or decomposition, there is no gain or loss of weight (mass). MASS CAN BE NEITHER CREATED NOR DESTROYED
photoelectric effect
light ejected electrons from a highly polished metal surface
atomic theory
matter consists of indivisible units known as atoms which CAN BE NEITHER CREATED NOR DESTROYED,all atoms of the same elelment are identical
chemically active metal
2-8-8-1
discovery of the electron
Thomson
violet
most effective in ejecting electrons from a metallic plate
nuclear fission
the separation of a nucleus into smaller nuclei
F has atomic number 17 its electrovalence is
-1
energy produced in a nuclear reactor
fission of heavy elements
chemically active nonmetal
2-8-7
Mendeleev
created the periodical table
plum pudding model of the atom
JJ Thomson
molecular wright of c4h10 is
58
discovered the xray
Roentgen
atomic number
the total charge on the nucleus of an atom
halogen
F, Cl, ,Br, I
theory of a hydrogen atom
bohr
gamma rays
the region of the spectrum that possesses the most energy
inert gases
He, Ar, Xe
H2O
molecule having 2 hydrogens and 1 oxygen
fusion
the fusion of light nuclei into heavier nuclei
insolation
incoming solar radiation
avagadros number
number of molecules in one gram of molecular mass
valence electrons
outermost electrons
avagadros number
6 X 10 to the 23 power
discovery of radioactivity
Becquerel
robert milikin
the oil drop experiment
rutherford
nuclear model of an atom
ionic bond
transfer of electrons
mass number (A)
sum of protons and neutrons (nucleons) in the nucleus
solar constant is measured in units of
kW/m2
Ca has atomic number 20 is electrovalence is
+2
alpha scattering experiement has provided evidence to
nuclear model of the atom
sources of energy
wood,natural gas, petroleum, coal, oil, hydroelectric
hubbles law leads to
big bang theory
the od experiment
measurement of the charge on electrons
binding energy
seperating a nucleus into free nucleons
inert gas
2-8-8
mass number
the number of protons and neutrons in the nucleus
neutrinos
massless particles emitted beta decay
alkaline earth
Be, Mg
hubble
found galaxies beyond the milky way
alpha decay
occurs for only the heavy elements
8o16
most stable against beta decay
development of photon theory
einstein
robert boyle
the father of chemistry

Deck Info

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