Chemistry: elements
Terms
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- Peridic table
- organization scheme for elements
- groups/families
- vertical columns of the periodic table (properties change regularly)
- Metals- def
- an element that is a good electrical conductor and a good heat conductor
- Kinds fo Metals
-
malleable (can be hammered ot molded)
ductie: drawn into a fine wire
tensile strength: ability to resist breaking when pulled
Most have a luster
Mercury: liquid Alkalis: soft - Nonmetals
- element that is a poor conductor of heat and electricity
- Metalloids
-
element that has some characteristics of metals and some characterisitics of nonmentals.
All solid at room temp., less malleable than metals, but less brittle than nonmetals.
Semiconductors of electricity
1 2, 2, 1 from silicon then lst is one over - Noble Gases
-
generally unreactive
Group 18 - Group 1 Alkaline Metals
- extremely reactive, one electron in the outer ring
- Group2 :alkaline
- earth metals
- Lanthanoid
- the first rown on botom
- Actinide
- second row on bottom