| A | B |
|---|
| Malleable | Ability of metals to be hammered or rolled into sheets. |
| Ductile | Ability of metals to be pulled into wires. |
| Metallic Bonding | Type of chemical bond in which positively-charged ions are surrounded by freely moving electrons. |
| Radioactive Element | An unstable element whose nucleus breaks down and gives off particles, radiation and energy. |
| Transition Element | An element in groups 3-12 of the Periodic Table; typically these are metals that have 1 or 2 electrons in their outer energy level. |
| Transuranium Element | Any element having more than 92 protons, the atomic number of uranium. |
| Diatomic Molecule | Molecule composed of 2 atoms of the same element. |
| Sublimation | Process in which a solid changes directly to a vapor without forming a liquid. |
| Semiconductor | An element that conducts electricity under certain conditions. |
| Allotrope | Different structural forms of the same element. |
