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13 Cards in this Set
- Front
- Back
According to the law of definite proportions any two samples of water H2O
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Both
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The law that states that mass camnot be created or destroyed in ordinary chemical and physical changes is know as the law of
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Conservation of mass
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When 2 electrons combine to form two or more compounds, the mass of one element that combines with a given mass of the other element is in the ratio pf small whole numbers, this statement is know as the law of
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Multiple proportions
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Which 2 compounds are examples of the law of multiple proportions?
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CO and CO2
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The observation that the mass of carbon dioxide formed from the reaction of carbon and oxygen equals the combined masses of the carbon and oxygen that reacted the law of
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Conservation of mass
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Dalton's atomic theory helped explain the law of conservation of mass because it stated that atoms
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Could not be created or destroyed
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Dalton's atomic theory does not support which of the following observations
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Atoms of most elements are made up of protons, neutrons, and electrons
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Dalton failed to recognize that substances can exist in the form of
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A2
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From observing that, within a cathode tube, cathode rays could move a paddle wheel placed on their path, scientist concluded that
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Particles were passing from the cathode to the anode
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The behavior of cathode rays led scientists to conclude that rays were composed of
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Negatively charged particles
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Because of most of the alpha particles in rutherfords gold-foil experiments passed through the foil, he concluded that
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Atoms were mostly empty space
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Because a few alpha particles we're deflected back from the foil in rutherfords gold foil experiments, he concede that the particles were
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Repelled by tiny regions of high positive charge
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Which of the following descriptions is not a characteristic of the nucleus of an atom
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Accounts for most of the atoms volume
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