Title: Finding Data on Elements
1Finding Data on Elements
- Organizing the Elements
- Each square of the periodic table includes an
elements atomic number, chemical symbol, name,
and atomic mass.
2Organization of the Periodic Table
- Organizing the Elements
- The 18 columns called GROUPS of the periodic
table reflect a repeating pattern of properties
that generally occur across a PERIODS.
3The Periodic Table
- Atoms, Bonding, and the Periodic Table
- Elements are organized into rows called Periods
and columns called groups based on their atomic
number.
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5Practice
- A vertical column in The Periodic Table is called
_______________. - The elements of the same group has similar
- ________________.
- As we go down the group the number of electrons
________________.
6Practice
- The horizontal rows in the periodic table are
called ______________. - Across the row the atomic number __________.
- Across the row the metallic nature of elements
_______________.
7Metals in the Periodic Table
- Metals
- The metals in Group 1, from lithium to francium,
are called the alkali metals. Alkali metals react
with atoms of other elements by losing one
electron.
8Metals in the Periodic Table
- Metals
- Group 2 of the periodic table contains the
alkaline earth metals. These elements are not as
reactive as the metals in Group 1, but they are
more reactive than most other metals.
9The Metalloids
The metalloids have some characteristics of both
metals and nonmetals. The most useful property of
the metalloids is their varying ability to
conduct electricity.
10Non Metals in the Periodic Table
- Non metals are to the upper right corner of the
Periodic Table. - Hydrogen takes an exceptional place in group one
because of its valance available electron.
11Families of Nonmetals
- Nonmetals and Metalloids
- Because the chemical properties of hydrogen
differ very much from those of the other
elements, it really cannot be grouped into a
family.
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13Practice
- The elements at the upper right corner of the
periodic table are____________
14Practice
The word family implies that the elements in a
family have like properties. What property do the
elements of the noble gas family all share? A)
The are not reactive. B) They are very
reactive. C) They are found in the earth's
atmosphere. D) They react readily with oxygen
in the air.