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Phys. Sci. Chap. 5
Vocabulary
| Question | Answer |
|---|---|
| Periodic Law | The law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements. |
| Period | A horizontal row of elements in the periodic table. |
| Group | A vertical column of elements in the periodic table; elements in a group share chemical properties. |
| Ion | An atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge. |
| Metal | An element that is shiny and that conducts heat and electricity well. |
| Nonmetal | An element that conducts heat and electricity poorly. |
| Semiconductor | An element or compound that conducts electric current better than an insulator does but not as well as a conductor does. |
| Alkali Metal | One of the elements of Group 1 of the periodic table. |
| Alkali Earth Metal | One of the elements of Group 2 of the periodic table. |
| Transition Metal | One of the metals that can use the inner shell before using the outer shell to bond. |
| Nobel Gas | One of the elements of Group 18 of the periodic table. |
| Halogen | one of the elements of Group 17 of the periodic table. |