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Unit 2 2024-25
6.6C, E Elements on the periodic table, formation of a new substance
| Term | Definition |
|---|---|
| CONDUCTILITY | ABILITY OF A SUBSTANCE TO TRANSFER HEAT OR ELECTRICAL ENERGY |
| DUCTILITY | CAN BE MADE INTO THIN WIRES |
| ELEMENT | A PURE SUBSTANCE COMPOSED OF THE SAME TYPE OF ATOM THROUGHOUT; CANNOT BE BROKEN DOWN BY SIMPLER MEANS |
| LUSTER | GENTLE SHINING LIGHT THAT IS REFLECTED FROM A SURFACE |
| MALLEABILITY | A PHYSICAL PROPERTY OF AN OBJECT ALLOWING IT TO BE RESHAPED WITH BENDING OR CRACKING |
| METALLOIDS | ELEMENTS WHOSE PHYSICAL PROPERTIES ARE INTERMEDIATE BETWEEN METALS AND NONMETALS |
| METALS | ELEMENTS THAT ARE MOSTLY SOLID AT ROOM TEMPERATURE, HAVE LUSTER, AND ARE GOOD CONDUCTORS OF HEAT AND ELECTRICITY |
| NONMETALS | ELEMENTS THAT ARE MOSTLY LIQUIDS AND GASES AT ROOM TEMPERATURE AND BAD CONDUCTORS OF HEAT AND ELECTRICITY |
| PERIODIC TABLE OF ELEMENTS | AN ORGANIZED TABLE OF ALL THE CHEMICAL ELEMENTS IN ORDER OF INCREASING ATOMIC NUMBER |
| PHYSICAL PROPERTY | A FEATURE OF MATTER THAT CAN BE OBSERVED OR MEASURED TO DESCRIBE AND DIFFERENTIATE BETWEEN SAMPLES OF MATTER |
| PRECIPITATE | A SOLID FORMED DUE TO A CHEMICAL REACTION OF LIQUIDS |
| RARE EARTH MATERIALS | 17 METALLIC ELEMENTS; LOCATED IN THE MIDDLE OF THE PERIODIC TABLE (ATOMIC NUMBERS: 21,39, AND 57-71 |