PS Module 17: Elements & their Properties

different molecular structures of the same element

• allotrope

• diatomic molecule

• metalloid

• transition element

molecule that consists of two atoms of the same element, joined by a covalent bond

• diatomic molecule

• allotrope

• metallic bonding

• transition element

property of metals and alloys that allows them to be drawn into wires

• ductile

• malleable

• metallic bonding

• transition element

property of metals and alloys that allows them to be hammered or rolled into thin sheets

• malleable

• ductile

• metallic bonding

• metalloid

element that is shiny, malleable, ductile, and a good conductor of heat and electricity

• metal

• nonmetal

• metalloid

• semiconductor

occurs because some electrons move freely among a metal's positively charged ions, explains properties such as ductility and the ability to conduct electricity

• metallic bonding

• semiconductor

• transuranium element

• radioactive element

elements that share some properties with metals and some with nonmetals

• metalloid

• transition element

• transuranium element

• radioactive element

element that usually is a gas or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and typically is not shiny

• nonmetal

• metal

• metalloid

• semiconductor

element, such as radium, whose nucleus breaks down and emits particles and energy

• radioactive element

• transuranium element

• semiconductor

• metal

material that conducts an electric current under certain conditions

• semiconductor

• malleable

• ductile

• metallic bonding