PHY SCI test 3
Terms
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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