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Week 9 – Periodic Table |
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| 1) Periodic Table | A chart where all elements are organized in
columns and rows according to their properties. |
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2) Group |
Vertical column of elements in the periodic table in which elements have certain properties in common. (Also called a Family) |
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3) Period |
A
horizontal row of elements in the periodic table arranged by atomic
number. |
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4) Metal |
Elements with a shiny surface that conduct heat and electricity well. Left side of periodic table. |
| 5) Nonmetal | Any element on the periodic
table that does not have the characteristics of a metal. Right side of
the periodic table. |
| 6) Metalloid | Elements on the stair step in the periodic table which have some properties of being metal and some properties of being nonmetals. |
| 7) Inert | Having little or no ability to react. Chemically inactive. The Noble Gases |
| 8) Reactivity | The tendency of substances to go through a chemical change. |
| 9) Representative Elements |
Elements in the tall groups.
(Groups 1, 2 and 13-18) They include metals, nonmetals, and
metalloids. |
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10) Transition Elements |
Elements in the short groups. (Groups 3-12) All of them are metals. |