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chemistry periodic t
| Term | Definition |
|---|---|
| elements | a substance that cannot be separated into other substances |
| groups/families | the vertical columns of elements in the periodic table. numbered 1-18 |
| periods | the horizontal rows of elements in the periodic table. Numbered 1-7 |
| Metal | is an element that is a good electrical conductor and a a good heat conductor |
| properties of metals | most are solid at room temperature |
| nonmetal | is an element, is a poor conductor of heat and electricity |
| semi metal/ metalloid | an element that has some characteristics of metals and non metals |
| properties of nonmetals | many are gases |
| all semi metal/ metalloid are | solids at room temperature |