1. Notes Tennessee SPI Objective: Use the periodic table to determine the properties of an element. Science Check for Understanding Identify the atomic number, atomic mass, number of protons, neutrons, and electrons in atoms using the periodic table. SPI 0807.9.9 Periodic Table Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation. Essential Question How do I use the periodic table to determine the atomic number, the atomic mass, the number of sub-atomic particles, & other properties in an atom?

2. We use a chart to organize elements called… The Periodic Table  F.Y.I We have discovered 98 naturally occurring elements 98 + 20 = 118 total  F.Y.I. We have also formed 20 man-made elements

3. . Notes Science SPI 0807.9.9 Periodic Table Hydrogen H 1.0 1 Helium He 4.0 2  Most common element in the universe is hydrogen  2nd common element in the universe is helium 73% of all matter 25% of all matter (About 73% of all matter is hydrogen) (About 25% of all matter is helium)

4. Notes SPI 0807.9.9 Periodic Table Periodic table  Is a chart of all known chemical elements  Displays the different types of atoms (called elements ) Purpose  Is a tool used 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) Science

5. Hydrogen H 1.0 1. Info in each square Atomic number  is the number of protons!  also matches the number of electrons! Chemical symbol Element name Atomic mass  Is the average mass of a sample of hydrogen atoms Notes Science SPI 0807.9.9 Periodic Table

6. Lithium 3 Li 6.941 Atomic Mass Step 1: Round the atomic mass to the nearest whole number Example: 6.941 rounds to 7 Step 2: Subtract the atomic number from this rounded number (Atomic number is 3) Example: 7 - 3 = 4 neutrons Lithium Atom Protons: Three Neutrons: ?????? Electrons: Three How to determine the number of neutrons Atomic Number

7. . Answer these questions on your paper Review SPI 0807.9.9 Periodic Table Science (5) What is atomic mass? (1) What are elements? Elements are the different types of atoms (2) What are the rows and columns called? Rows are periods & columns are groups or families (3) Describe 3 ways the periodic table is organized. …organized in rows (periods) according to the atomic number. …organized in columns (families) according to similarities …organized into metals, nonmetals, and metalloids (4) What is an atomic number? It is the number of protons in an atom It is the average mass of a sample of the same kind of atoms

8. Oxygen 8 O 16.0. Write down your answers What is oxygen's atomic number and atomic mass? Review SPI 0807.9.9 Periodic Table Science Atomic Number Atomic Mass

9. Oxygen 8 O 16.0. Write down your answers How many protons and electrons does each atom of oxygen have? Review SPI 0807.9.9 Periodic Table Science Atomic Number …has 8 protons …also has 8 electrons

10. Oxygen 8 O 16.0. Two Simple Steps: Notes SPI 0807.9.9 Periodic Table Science Atomic Number Atomic Mass 1) Round the atomic mass to the nearest whole number Example: 16.0 rounds to 16 2) Subtract the atomic number from this rounded number Reminder: Atomic number is 8 Example: 16 - 8 = 8 neutrons Write down your answers How many neutrons does each atom of oxygen have?

11. Here is an example of a question you might see on a quiz or test. Questions Science Periodic Table-Question SPI 0807.9.9 Periodic Table

12. Here is an example of a question you might see on a quiz or test. Questions Science Periodic Table-Question SPI 0807.9.9 Periodic Table

13. Here is an example of a question. Questions Science Periodic Table-Question SPI 0807.9.9 Periodic Table

14. Here is an example of a question you might see on a quiz or test. Questions Science Periodic Table-Question SPI 0807.9.9 Periodic Table

15. Here is an example of a question you might see on a quiz or test. Questions Science Periodic Table-Question SPI 0807.9.9 Periodic Table