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

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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