| A | B |
|---|
| Sublimation | The process in which a solid changes directly to a vapor without forming a liquid |
| Diatomic molecule | A molecule composes of two atom of the same element |
| Radioactive element | An unstable element whose nucleus breaks down and gives off particles radioactive and energy |
| Malleable | Ability of metals to be hammered or rolled into then sheets |
| Transuranium element | An element having more than 92 protons in its nuclues |
| Allotrope | Different structural forms of the same element |
| Ductile | Ability of metals to be pulled into wires |
| Metallic bond | Type of chemial bond in which positively charged ions are surrounded by freely moving electrons |
| Semiconductor | An element that conducts electricity under certain conditions |
| Transition element | An element in groups 3-12 of the periodic table. |
