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Related Flashcards
Cards In This Set
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Who conceived the basic principles of atomic theory?
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Dalton
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Atoms of the same element may differ in their _______________.
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Mass number
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In Rutherford's experiment, a small percentage of the positively charged particles bombarding the metal's surface ____________.
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....were deflected back toward the source from the metal
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Which of the following makes up the majority of the volume of an atom?
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Electron Cloud
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Which statement best describes the density of an atom's nucleus?
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The nucleus occupies very little of the atom's volume but contains most of its mass.
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Dalton's atomic theory helped to 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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Which of the following alkali metals reacts most violently with water?
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Cesium
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Which of the following elements has chemical properties most similar to that of Sulfur?
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Oxygen
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The amount of a substance that contains a number of particles equal to the number of atoms exactly 12g of carbon-12 is referred to as a(n) ______.
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Mole
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______ is the halogen in the 4th period.
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Bromine
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______ is an isotope of hydrogen that is the most common on Earth.
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Protium.
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Isotopes differ in atomic mass because they have different numbers of ________.
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Neutrons.
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The only non-metal in group 14 is ___________.
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Neutrons.
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________ is a property of metals that allows them to be hammered and reshaped.
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Malleability
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Iron has an atomic number of __ and an atomic mass of _____.
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26, 55.85
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