Chemistry Checkpoint unit 4-3

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Metals

Elements that conduct electricity and heat, are malleable, and have luster . They are categorized into transition metals, alkali metals, and alkaline earth metals.

Nonmetals

Elements that typically lack metallic properties, are poor conductors of heat and electricity, and are often brittle in solid form.

Metaloids

Elements that have properties intermediate between metals and nonmetals. They can conduct electricity better than nonmetals but not as well as metals.

Alkali Metals

The alkali metals are a group of highly reactive elements found in Group 1 of the periodic table.

Alkaline Earth Metals

A group of metals in Group 2 of the periodic table, known for being reactive and only being in compounds.

Halogens

Nonmetals in group a. Are all toxic and form acids when combined with hydrogen.

Noble gases

The noble gases are a group of nonmetals located in Group 18 of the periodic table, known for being unreactive due to having a full valence shell.

Representative elements

Elements in groups 1, 2, and 13-17 of the periodic table, which include both metals and nonmetals, displaying a wide range of chemical properties.

Transition metals

The transition metals are a group of metallic elements found in Groups 3 to 12 of the periodic table, good conducters of electricity.

Inner Transition Metals

A group of metallic elements located in the f-block of the periodic table, made for nuclear reactions.