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Solid materials that are typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
What are metals?
The tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties.
What is the periodic table?
A horizontal row of the periodic table.
What is a period?
Usually poor conductors of heat and electricity, and not malleable or ductile.
What are nonmetals?
A law stating that the elements, when listed in order of their atomic numbers, fall into recurring groups, so that elements with similar properties occur at regular intervals.
What is the periodic law?
A column in the periodic table, where the chemical elements have atoms with identical valence electron counts and identical valence vacancy counts
What is a group?
A unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12.
The electrons located at the outermost shell of an atom.
What are valence electrons?
Elements whose properties are intermediate between those of metals and solid nonmetals or semiconductors
What are metalloids?
Reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made, and occupy group 17 of the periodic table.
What are halogens?
Very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides that occupy group 1 of the periodic table.
What are alkali metals?
Odorless, colorless, nonflammable, and monotonic gases with low chemical reactivity that occupy group 18 of the periodic table.
What are noble gases?
Reactive, electropositive, divalent metals, that form basic oxides which react with water to form comparatively insoluble hydroxides.
What are alkaline Earth metals?
Metallic elements that show variable valence and a strong tendency to form coordination compounds, which are often colored.
What are transitional metals?