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5 13 1 9 17 6 14 WHACK-A-MOLE 2 10 18 7 15 3 11 19 8 16 4 12 20
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1 How many electrons are in an neutral atom of sodium? Students type their answers here
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2 What is the correct symbol for the atom with 42 protons and 49
neutrons? Students type their answers here
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3 Which is the number of neutrons in ? Students type their answers here
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4 What element has 14 protons? Students type their answers here
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5 An atom has 23 protons and 29 neutrons. Which is the correct
chemical symbol for this atom? Students type their answers here
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6 An industrially important element contains 26 electrons
and rusts in the presence of air and moisture. Identify the
element. Students type their answers here
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7 What has a charge of +1? Students type their answers here
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8 Which two are isotopes of one another? Atom Protons Neutrons Electrons 1 8 10 2 9 3 4 11 Students type their answers here
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9 Which two have the same mass? Atom Protons Neutrons Electrons 1 8 10 2 9 3 4 11 Students type their answers here
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10 Which is the smallest part of an element that retains all the
properties of the element? Students type their answers here
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11 How many neutrons are in an atom of chlorine? Students type their answers here
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12 The box for an element from the periodic table is shown. Which is
the atomic mass? Students type their answers here
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13 The box for an element from the periodic table is
shown. Which is the atomic number? Students type their answers here
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14 Which scientist described a positively charged core (“nucleus”) in
the middle of a lot of empty space? Students type their answers here
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15 Which scientist described an atom made of a solid positively
charged substance with electrons dispersed throughout it? Students type their answers here
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16 What is the average atomic mass of this element? Isotope Mass (amu) Percent Abundance Silver-105 105 48% Silver-108 108 43% Silver-109 109 9% Students type their answers here
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17 Write the chemical symbol for the isotope of cobalt with 37
neutrons. Students type their answers here
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18 Identify the missing particle in the equation below. Justify your
response. Students type their answers here
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19 Identify the element containing 34 protons. Students type their answers here
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20 Fast moving electrons travel through the empty space surrounding
the nucleus. How are electrons held within the atom? Students type their answers here
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