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16 Cards in this Set
- Front
- Back
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Who developed the Law of Conservation of Mass and state it.
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The L.ofC.M. was developed by Antoine Lavoisier. It says that mass is neither created nor destroyed.
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What is the law of definite proportions and who is its developer?
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The LofDP states that a given compound is always contains exactly the same proportions of elements by mass.
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State the developer of and the law of multiple proportions.
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John Dalton. When 2 elements for a series of compounds the ratios of the massses of the 2nd element that combine with 1g of the first element can always be reduced to small whole numbers
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State Dalton's Atomic Theory
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1.Each element is made up of tiny particles called atoms
2.The atoms of each given element are indentical; the atoms of different elements are fundamentally different 3.Chemical compounds are formed when atomss combine. A given compound always has the sme relative #s & types of atoms. 4.Chemical reactions involve the reorganization of atoms--changes in the way they are bound together. The atoms themselves are not changed in chemical reaction |
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State Avogadro's Hypothesis
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At the same temp. and pressure = volumes of gases contain the same # of particles.
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What are isotopes?
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Atoms with the same # of protons but different numbers of neutrons.
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Covalent Bonds
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bond in which atoms share electrons forming a molecule
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Structural formula
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the representation of a molecule in which the relative positions of the atoms are shown and the bonds are indicated by lines.
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Anion
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negative ion
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cation
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positive ion
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molecule
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a bonded collection of 2 or more atoms of the same or different elements
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ion
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atom or group of atoms that has a net positive or negative charge
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ionic bond
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the electrostatic attraction between oppositely charged ions
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atomic number
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number of protons
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polyatomic ion
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an ion containing numerous atoms
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mass number
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the total number of protons and neutrons in the atomic nucleus of an atom
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