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PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE THROUGH THE PRESENTATION. . SPI 0807.9.9 Periodic Table. Notes. Periodic table A chart of all known chemical elements Shows all the different types of atoms Purpose

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  1. PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE THROUGH THE PRESENTATION  SPI 0807.9.9 Periodic Table Notes • 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)

  2. SPI 0807.9.9 Periodic Table Notes • We use a chart to organize elements called… • Currently scientists believe there are only 98 naturally occurring elements in the universe (Reference link: Chemistry Website • We have also created 20 man-made elements for a total of 118 The Periodic Table 118 Uuo Ununoctium

  3. SPI 0807.9.9 Periodic Table Notes . • Info in each square • Atomic number • is the number of protons! • also matches the number of electrons! • Chemical symbol • Element name • Atomic mass 1 H Hydrogen 1.0

  4. SPI 0807.9.9 Periodic Table Notes . How to determine the number of neutrons 3 • Reminder: • The number of protons • (atomic number) is the same as the • number or electrons Li Two Simple Steps: 1) Round the atomic mass to the nearest whole number Example: 6.941 rounds to 7 2) Subtract the atomic number from this rounded number. Example: 7 - 3 = 4 neutrons Lithium 6.941

  5. Quick Review  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?

  6. Quick Review  SPI 0807.9.9 Periodic Table . Write down your answers (7) What is the atomic number and atomic mass of oxygen? (see slides 3, 6 and 7 to help you) 8 O Oxygen 16.0

  7. Periodic Table in 3 Sections Another way the table is organized is into 3 sections called… Metals: (on the left & middle) Metalloids: (on the zig-zag line) Nonmetals: (on the right) Nonmetals (on the right) Metals (on the left and middle)

  8. (8) Which elements are shaded above? Answer the question below-write it down! (Then press the right arrow button)  SPI 0807.9.9 Periodic Table Review Answer: The metal elements are shaded above

  9. Answer the question below-write it down! (Then press the right arrow button)  SPI 0807.9.9 Periodic Table Review (9) Which elements are shaded above? (9) The nonmetal elements are shaded above

  10. (10) Which elements are not shaded above? Answer the question below-write it down! (Then press the right arrow button)  SPI 0807.9.9 Periodic Table Review (10) The metalloid elements are not shaded

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