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Stack #88057
Chapter 11 and 12 | |
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electron | the - charg. part. of the nucleus |
semi conductors | a substance that conducts an electric current better than an insulater but not as well as a conductor |
neutron | particles of the nucl. that have no chg. |
nucleus | in ctr. of the atom, a tiny ext.dense + chg. region |
amu | SI unit used to express the masses of part. in atoms |
electron shell/energy level | inside the atom where electrons are likely found |
periodic table | a table that list all the elem., chemical symb., atomic # and mass |
metals | found to the left of the zigzag line on the periodic table |
nonmetals | found to the right of the zigzag line on the periodic table |
metalloids | border the zigzag line |
alloys | solid solution of metals or nonmetals disolved in meals |
proton | the + charg. particles of the nucleus |
strong force | attractive force that holds the protons and neutrons together in the nucleus |