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Stack #88057
| Chapter 11 and 12 | |
|---|---|
| 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 |