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Notes SPI 0807.9.9 Periodic Table
Periodic table A chart of all known chemical elements Shows all the different types of atoms
Purpose To quickly locate a variety of information about a
particular element
How is it organized Organized into rows called periods Organized into columns called groups (also called families) Arranged in numerical order by the atomic number Also arranged other ways (metals, nonmetals, metalloids, etc)
PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE
THROUGH THE PRESENTATION
We use a chart to organize elements called…
Currently scientists believe there are only 98 naturally occurring elements in the universe (Reference link: Chemistry WebsiteWe have also created 20 man-made elements for a total of 118
Notes
The Periodic Table
118Uuo
Ununoctium
SPI 0807.9.9 Periodic Table
SPI 0807.9.9 Periodic Table
Hydrogen
1
H1.0
.Info in each square
Atomic number is the number of protons! also matches the number
of electrons!
Chemical symbol
Element name
Atomic mass
Notes
SPI 0807.9.9 Periodic Table
Lithium
3
Li6.941
.
Reminder: The number of protons(atomic number) is the same as thenumber or electrons
Notes How to determine the number of neutrons
Two Simple Steps:1) Round the atomic mass to the
nearest whole numberExample: 6.941 rounds to 7 2) Subtract the atomic number
from this rounded number.Example: 7 - 3 = 4 neutrons
SPI 0807.9.9 Periodic Table
.
Write down your answers(Look back at previous slides as needed to help you)
(1) What does the periodic table display? (2) What are elements? (3) What are the rows called? (4) What are the columns called? (5) Describe 2 ways the periodic table is organized.(6) How many natural elements are there?
Quick Review
SPI 0807.9.9 Periodic Table
Oxygen
8
O16.0
.
Write down your answers(7) What is the atomic number and atomic mass ofoxygen? (see slides 3, 6 and 7 to help you)
Quick Review
Periodic Table in 3 SectionsAnother way the table is organized is into 3 sections called…Metals: (on the left & middle)
Nonmetals: (on the right)
Metals(on the left and middle)
Metalloids: (on the zig-zag line)
Nonmetals(on the right)
(8) Which elements are shaded above?
SPI 0807.9.9 Periodic TableReviewAnswer the question below-write it down!
(Then press the right arrow button)
Answer: The metal elements are shaded above
(9) Which elements are shaded above?
SPI 0807.9.9 Periodic TableReviewAnswer the question below-write it down!
(Then press the right arrow button)
(9) The nonmetal elements are shaded above
(10) Which elements are not shaded above?
SPI 0807.9.9 Periodic TableReviewAnswer the question below-write it down!
(Then press the right arrow button)
(10) The metalloid elements are not shaded