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20 Cards in this Set
- Front
- Back
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Quantitative measurement
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numerical result
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Qualitative measurement
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description or qualities are reported
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Scientific notation
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number is written as a product of a number between 1.00 and 9.99
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Accuracy
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now near the actual measurement the taken measure is
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Precision
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how close multiple measurements are to one another
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Matter
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takes up space and has mass
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Mass
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quantity of matter an object has
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Elements
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cannot be broken into simpler types
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Nucleus
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comprised of protons and neutrons
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Atomic number
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number of protons in the nucleus of an atom of the element
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Electron
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negative charge; orbit the nucleus in energy levels
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Covalent bond
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two or more atoms share one or more pairs of electrons
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Ionic bond
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electron from one atom is transferred to an atom of another element
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Ion
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atom with electrical charge
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Exergenic reaction
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net release of free energy
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Endergonic reaction
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reaction yields a net absorption of free energy
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Catalyst
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chemical substance that decreases the amount of activation necessary for a chemical reaction
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Reduction-oxidation reactions
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chemical reactions that result in transference of electrons
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Oxidation reaction
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when an atom loses one or more electrons resulting in a positive charge
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Reduction reaction
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atom gains one or more electrons resulting in a negative change
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