Chemistry Ch. 5 Test-The Periodic Law

Known for arranging elements by increasing atomic masses and grouping them together by similar physical and chemical properties

Known for arranging elements by increasing atomic number or number of protons in the nucleus

Non-reactive elements that are found in Group 18 of the periodic table

Similar in chemical and physical properties; elements 58-71 (Period 7); very tedious task to separate and identify them; metals and rare earth metals; shiny metals similar to reactivity of alkaline-earth metals

Elements found in Period 7; metals and rare earth metals; all radioactive

Chemically reactive metals found in groups 1 and 2 of the periodic table

Have a silvery appearance and are soft enough to cut with a knife; very reactive-not found in nature as free elements and combine vigorously with most non-metals; melt at successively lower temperatures; react strongly with water to produce hydrogen gas and aqueous solutions of substances

Harder, denser, and stronger than alkali and have higher melting points; less reactive but still not found in nature as free elements

D-block elements with typical metallic properties; good conductors of electricity and have a high luster; less reactive than alkali and alkaline-earth metals; some are so reactive that they do not form easy compounds, existing in nature as free elements

P- and s-block elements; at right-hand end, the p-block includes all of the non-metals (minus hydrogen and helium) and also the 6 metalloids; at the left-hand side and bottom of the block there are 8 p-block metals

Found in Group 17; most reactive nonmetals; react vigorously with most metals to form compounds known as salts

Brittle solids with some properties of metals and some of nonmetals; have electrical conductivity intermediate between that of metals and nonmetals (conductors and nonconductors)

When completing orbital notations, you must fill in each electron one at a time

Electrons available to be lost, gained, or shared in the formation of chemical compounds; located in incompletely filled main-energy levels (on outermost/highest energy level)

Patterns of properties for the elements