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12 Cards in this Set
- Front
- Back
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ATOM
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THE SMALLEST STABLE UNITS OF MATTER
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ATOMIC NUMBER
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THE NUMBER OF PROTONS IN AN ATOM
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ELEMENT
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A PURE SUBSTANCE COMPOSED OF ATOMS OF ONLY ONE KIND. ALL THE ATOMS THAT HAVE THE SAME NUMBER OF PROTONS=THE SAME ATOMIC NUMBER
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ISOTOPES
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ATOMS OF THE SAME ELEMENT WHOSE NUCLEI CONTAIN SAME NUMBER OF PROTONS BUT DIFFERENT NUMBER OF NEUTRONS
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DALTON
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UNIT USED TO EXPRESS ATOMIC WEIGHT AKA AMU ATOMIC MASS UNIT
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MOLE
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UNIT IN GRAMS TO THAT ELEMENTS ATOMIC WEIGHT. 6.023x1023
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WHAT ARE THE SIX MOST ABUNDANT ELEMENTS IN THE HUMAN BODY?
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OXYGEN. CARBON, HYDROGEN, NITROGEN, CALCIUM, AND PHOSPHORUS
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WHAT ARE THE PERCENTS OF BODY MASS?
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O 65
C 18.6 H 9.7 N 3.2 Ca 1.8 Ph 1.0 TOTAL COMBINED=99.3% |
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THE 1 STEP OF IONIC COMPOUND FORMATION:
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1. ELECTRON DONOR LOSES ONE OR MORE ELECTRONS AND BECOMES A POSITIVELY CHARGED CATION
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THE 2 STEP OF IONIC COMPOUND FORMATION:
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THE ELECTRON ACCEPTOR GAINS THE ELECTRON(S) AND BECOMES AN ANION WITH A NEGATIVE CHARGE
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THE 3 STEP OF THE FORMATION OF AN IONIC COMPOUND
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ATTRACTION BETWEEN THE 2 OPPOSITE CHARGES DRAWS THEM TOGETHER AND FORMS A COMPOUND
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FORMATION OF A POLAR COVALENT BOND h20
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2 HYDROGEN ATOMS SHARE ONE ELECTRON EACH WITH OXYGEN WHICH COMPLETES ALL 3 OUTER SHELLS.
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