Metals
Elements that are shiny, malleable, ductile, and good conductors of heat and electricity
Malleable
They can be hammered or rolled into sheets
Ductile
They can be drawn into wires
Metallic bonding
Positively charged metallic ions are surrounded by a sea of electrons
Radioactive element
Is one in which the nucleus breaks down and gives off particles and energy
Transition elements
The elements in groups 3-12 in the periodic table
Nonmetals
Elements that are usually gases or solids at room temperature
Diatomic molecule
Consists of two atoms of the same element in a covalent bond
Metalloids
Elements that have some properties of metals and some properties of nonmetals
Allotropes
Different molecular structures of the same element
Semiconductors
Elements that conduct an electric current under certain conditions
Transuranium elements
Elements that have more than 92 protons
Metals
Elements that are shiny, malleable, ductile, and good conductors of heat and electricity
Malleable
They can be hammered or rolled into sheets
Ductile
They can be drawn into wires
Metallic bonding
Positively charged metallic ions are surrounded by a sea of electrons
Radioactive element
Is one in which the nucleus breaks down and gives off particles and energy
Transition elements
The elements in groups 3-12 in the periodic table
Nonmetals
Elements that are usually gases or solids at room temperature
Diatomic molecule
Consists of two atoms of the same element in a covalent bond
Metalloids
Elements that have some properties of metals and some properties of nonmetals
Allotropes
Different molecular structures of the same element
Semiconductors
Elements that conduct an electric current under certain conditions
Transuranium elements
Elements that have more than 92 protons