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17 Cards in this Set
- Front
- Back
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atom
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the smallest piece of an atom
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atomic number
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the number of protons that an atom has in the nucleus
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electron
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a negatively charged particle outside of the nucleus
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proton
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a positively charged particle
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neutron
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found in the nucleus
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mass number
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the total number of protons plus the total number of neutrons in an atoms nucleus
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energy levels
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paths around the atoms nucleus
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non-metals
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a chemical element that lacks the characteristics of a metal
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periods
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horizontal column in the periodic table the represents the energy level of an element
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chemical symbol
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1 or 2 letters to stand for the name of the element
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Bohr diagram
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a diagram that shows the number of protons and neutrons in a nucleus that orbit energy levels and electrons
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metal
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an element on the left side of the periodic table except hydrogen:good conductors of electricity
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metalloid
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an element with properties of metals and non-metals
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isotope
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atoms of the same element that have differ #s of neutrons in their nuclei
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family
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vertical column in the periodic table that contains similar element qualities
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nucleus
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the control center of a cell
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periodic table
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a table of all the elements arranged by the # and grouped according to similar properties
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