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6th Chemistry
TEKS 6.6B, 6.6C, 6.6E
| Term | Definition |
|---|---|
| heterogeneous mixture | a mixture that is not uniform throughout |
| homogeneous mixture | mixture that is uniform throughout |
| pure substance | samples of matter that are made up of the same particles |
| conductivity | ability of a substance to transfer heat or electrical energy |
| ductility | can be made into wires |
| element | a pure substance composed of the same type of atom throughout |
| luster | a physical property that describes how an element’s surface interacts with light |
| malleability | a physical property of an object allowing it to be reshaped with bending or cracking |
| metalloids | elements with properties similar to metals and nonmetals |
| metals | elements that are mostly solids at room temperature, have luster, and are good conductors of heat and electricity |
| nonmetals | elements that are solids, liquids, or gases at room temperature, dull luster, and poor conductors of heat and electricity |
| periodic table | an organized table of all the chemical elements grouped by properties |
| physical property | properties of matter that can be observed, measured, or changed without changing the matter itself |
| precipitate | a solid formed due to a chemical reaction of liquids |
| rare Earth metal | metallic elements; rare because they are difficult to extract from deposits in the Earth; important components in modern technologies like magnets, batteries, and electronic devices |
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