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