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Chaptr 19 vocabulary
Chaptr 19 vocabular
| Question | Answer |
|---|---|
| Metal | element that typically is a hard, shiny solid,is malleable, and is a good conductor of heat and electricity |
| Malleable | ability of metals and alloys to be rolled or hammered into thin sheets |
| Ductile | ability of metals to be drawn into wires |
| Metallic bonding | occurs because electrons move freely among a metal's positively charged ions and explains properties such as ductility and the ability to conduct electricity |
| Radioactive element | element, such as radium, whose nucleus breaks down and emits particles and energy |
| Transition element | elements in Groups 3 through 12 of the periodic table |
| Nonmetal | element that usually is a gas or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and typically is not shiny |
| Diatomic molecule | a molecule that consists of two atoms of the same element |
| Salt | compound formed when negative ions from an acid combine with positive ions from a base. |
| Sublimation | the process of a solid changing directly to a vapor without forming a liquid. |
| Metalloid | element that shares some properties with metals and some with nonmetals |
| Allotrope | different forms of the same element having different molecular structures |
| Semiconductor | materials having conductivity properties between that of metals (good conductors) and nonmetals (insulators) and having controllable conductivity parameters |
| Transuranium element | elements having more than 92 protons, all of which are snthetic and unstable |
Created by:
lpbritton
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