| A | B |
|---|
| malleable | ability to be hammered or rolled into sheets |
| ductile | ability to be drawn into wires |
| metallic bonding | positively charged metallic ions are surrounded by a "sea of electrons" |
| radioactive element | an element whose nucleus breaks down to give off particles and energy |
| transition element | elements in Groups 3 - 12 on the periodic table |
| transuranium element | elements having more than 92 protons |
| diatomic molecule | consists of two atoms of the same element |
| sublimation | change of a solid directly to a gas |
| semiconductor | conduct electric current under certain conditions |
| allotrope | different structural form of the same element |
