nonferrous metals; refers to any metal other than iron, chromium, manganese, and their alloys

Metals with a high density (typically greater than 4.5 or 5.0 g/cm³), such as iron, copper, and mercury; often used to refer to toxic metal elements (such as lead, cadmium, and mercury) that accumulate in the environment or biological organisms, causing health damage.

precious metal; noble metal; any of a group of metals including gold, silver, and platinum that are rare and resistant to corrosion

a chemical element or substance that lacks the properties of a metal, such as metallic luster, conductivity, and malleability; metalloid

ferrous metal; industrial category consisting of iron, chromium, manganese, and their alloys

Metals that are relatively rare in the earth's crust, difficult to extract, or found in low concentrations; used as essential materials in industries like aerospace, semiconductors, and nuclear energy.

Any of the six chemical elements in Group 1 of the periodic table, including [[锂|鋰|li3]], [[钠|鈉|na4]], [[钾|鉀|jia3]], [[铷|銣|ru2]], [[铯|銫|se4]], and [[钫|鈁|fang1]]; they are highly reactive and form strong bases when their oxides dissolve in water

any of a group of 17 chemically similar metallic elements, including scandium, yttrium, and the lanthanides

Any metal with a relatively low density, generally defined as less than 4.5 or 5.0 grams per cubic centimeter, including common examples like aluminum, magnesium, and sodium.

Any of the six chemical elements in group 2 of the periodic table, including [[铍|鈹|pi2]], [[镁|鎂|mei3]], [[钙|鈣|gai4]], [[锶|鍶|si1]], [[钡|鋇|bei4]], and [[镭|鐳|lei2]]

A chemical bond formed between metal atoms by the electrostatic attraction between positively charged ions and a shared pool of mobile electrons.

metal rod; metal stick or club

A phase of hydrogen in which it behaves as an electrical conductor; it is believed to be present in the cores of gas giant planets and may act as a high-temperature superconductor.

a metal ring or cap used to strengthen the end of a stick, handle, or tube; metal loop

the weakening or cracking of metal parts caused by repeated stress or prolonged use over time

wire made of metal

a very thin sheet of metal, such as aluminum foil or gold leaf

Currency cast from metal materials such as gold, silver, or copper; serves as a medium of exchange.

A chemical element that has a metallic luster, is malleable and ductile, and can conduct heat and electricity; except for mercury, they are solid at room temperature.

A chemical element with properties intermediate between those of metals and nonmetals; metalloid.

(chemistry) the group of elements including boron, aluminum, gallium, indium, and thallium whose compounds are commonly found in soil and minerals

any of the metallic elements in the first column of the periodic table, including lithium, sodium, and potassium

A type of chemical element with properties intermediate between those of metals and nonmetals; its electrical conductivity increases with temperature, forming the basis of the semiconductor and electronics industries

Any of the metallic elements in the central block of the periodic table, such as iron, cobalt, and nickel, characterized by having similar chemical properties

heavy metal music incorporating symphonic elements such as orchestral instruments, choirs, or operatic vocals

The sheen or reflection of light typical of metallic surfaces, commonly found in opaque minerals and natural metals

metalware; utensils made of metal

metal cover or outer shell of a device or machine

The craft and techniques used to create objects from metal; also refers to the metal objects themselves.

metal board, plank, or plate