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25 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
Who said different elements have different masses?
John Dalton
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Who suggested that an atom is a positivly charged sphere with electrons EMBEDED in it?
J.J Thomson
muffin
What did Hantaro Nagaoka say?
his model of the atom had a large sphere in the center with a positive charge with electrons revolving around this sphere like the planets around the sun.
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Who concluded that the atom is mostly empty space? And that electrons orbit randomly around a small positivly charged nucleus.
Ernest Rutherford
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What did Neils Bohr say?
his models show electrons moveing in specific shells or layers.
the bohr model
Who discovered the nuetron?
James Chadwick
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What did Demitri Mendeleev do?
published the first period table.
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Who came up with the law of conservation of mass?
Antoine Lavoisier
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A colomn is called what on the periodic table?
group or family(similar properties)
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What is a row called on the periodic table?
Is called a period
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What are the elements that are liquids at room temperture?
Mercury and Bromine
-2
What are the only elements that are metaliods?
Boron, silicon, germanium, arsenic, antimony, tellurium, Astatine
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What is a compound between 2 nonmetals that uses prefixes?
Covalent
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A compound between a metal and nonmetal does not use prefixes...
ionic
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What type of reaction is it when the products are less than the reactants?
Exothermic Reaction
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The products are more than the reactants
endothermic
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What did J. Tuzo Wilson observe?
cracks in the continents are similar to those on the ocean floor. idea of plates
earth science
What is a transform plate boundary?
two plates slip past each other in opposite directions.
causes earthquake
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What is a convergent plate boundary?
Plates come together causeing subduction and mt. ranges.
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Plates move apart found in ocean and on land rift valley forms.
Divergent plate boundary
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What did Harry Hess come up with?
The idea of sea floor spreading
see
Who came up with continental drift and pangea
Alfred Wegner
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What is the windward side?
the side side that faces oncomeing wind.
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Leeward?
the downwind side of the mountaints.
What are the 2 harmful, colorless, odorless indoor pollutants
Randon, Carbon Monoxide
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