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chapter 19 k
science
| Question | Answer |
|---|---|
| element that typically is a hard shiny solid is malleable and is a good conductro of heat and electricity | Metal |
| ability of metals and alloys to be rolled or hammered into thin sheets | malleable |
| ability of metals to be drawn into wires | ductile |
| occurs because electrons move freely among a metals positively charged ions and explains properties such as ductiltiy and the ability to conduct electricity | metallic bonding |
| element such as radium whose nucleus breaks down and emits particles and energy | radioactive element |
| element is groups 3-12 of the periodic table occur in nature as uncombined elements and include the iron triad and coinage metals | transition element |
| element that usually is a gas or brittle solid ar room temp. is not malleable or ductile | nonmetal |
| a molecule that consists of two atoms of the same element | diatomic molecule |
| compound formed when negative ions from an acid combine with positive ions from a base | salt |
| the process of a solid changing directly to a vapor without forming a liquid | sublimation |
| element that shares some properties with metals and some with nonmetals | metalloid |
| diggerent forms of the same element having different molecular structures | allotrope |
| materials having conductivity properties between that of metals and nonmetals and having controllable conductivity parameters | semiconductor |
| elements having more than 92 protons all of which are synthetic and unstable | transuranium element |
Created by:
MrBig86
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