The Periodic Table Why is it called that?. The Periodic Table 8.5 Matter and energy. The student...
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Transcript of The Periodic Table Why is it called that?. The Periodic Table 8.5 Matter and energy. The student...
![Page 1: The Periodic Table Why is it called that?. The Periodic Table 8.5 Matter and energy. The student knows that matter is composed of atoms and has chemical.](https://reader035.fdocuments.us/reader035/viewer/2022062314/56649d985503460f94a82620/html5/thumbnails/1.jpg)
The Periodic Table
Why is it called that?
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The Periodic Table8.5 Matter and energy. The student knows that matter is composed of
atoms and has chemical and physical properties. The student is expected to:
• (A) describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud;
• (B) identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity;
• (C) interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements;
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The Periodic Table
• Where are some places you have visited that have areas or items organized into categories?
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The Periodic Table
• Come up with a list of 10 items• Come up with your own system for organizing
or categorizing these items• Use the construction paper to create a table
to display your items in categories• Be able to explain your system for organizing
the items the way you did to the class
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The Periodic Table
• The Periodic Table is organized with a system for classifying all of the elements
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The Periodic Table
• Elements are made of atoms • What are atoms?• a unit of matter which is the smallest amount
of a element that exists
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The Periodic Table
• An atom is made up of– Protons– Neutrons– Electrons
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The Periodic Table
• The Protons – are found in the nucleus, • They have a positive charge (+)• Protons have a mass of 1 amu
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The Periodic Table
• The Neutrons – are found in the nucleus• They have no charge – they’re neutral• Neutrons have a mass of 1 amu
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The Periodic Table
• The Electrons – move in an electron cloud or energy levels around the nucleus
• They have a negative charged (-)• Electrons have a mass of 0.0005 amu
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The Periodic Table
• So electrons are much smaller than protons & neutrons
+
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The Periodic Table
• How many electrons can fit in the:– First shell or energy level of an atom?– Second shell or energy level – Third shell or energy level
2
88
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The Periodic Table
• What is the Bohr Model?• A simple model that depicts the number and
location of protons, neutrons, & electrons
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The Periodic Table
• Organize the Bohr Model cards into groups and periods using patterns
• You may use the periodic Table to help organize the Bohr models
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The Periodic Table
• What patterns do you see in your arrangement of the Bohr Model cards?
• Do any of the patterns repeat?
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The Periodic Table: Why Is It Called That?
• This repeating pattern is called a “periodic” property or trend which is how the Periodic Table of Elements got its name.
• The properties repeat themselves• Periodic properties help you predict the
property of the next element in a group or period.
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The Periodic Table: Why Is It Called That?
• Can you think of any other repeating, periodic patterns that occur in nature?– Seasons (Spring, Summer, Fall, & Winter – ALWAYS occur in the
same order/definite repeating, periodic pattern)– Phases of the Moon– ALWAYS occur in the same order/definite
repeating, periodic pattern– Tides – ALWAYS occur in the same order/definite repeating,
periodic pattern– Daytime & Nighttime – ALWAYS occur in the same
order/definite repeating, periodic pattern• Periodic properties help you predict what comes next.
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The Periodic Table
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The Periodic Table: Why Is It Called That?
• Periodic Trends or Properties are repeating patterns
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The Periodic Table: Why Is It Called That?
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The Periodic Table
• Read the Periodic Table Information Sheet – staple this into your Science Journal
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The Periodic Table
• FIRST, ON THE BACK OF YOUR PERIODIC TABLE: – Write your full name– REGULAR Science teacher’s Name & – REGULAR Science class period – this will be turned in for a grade
• Use the information sheet to color-code your Periodic Table
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E R I O D
GROUP
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The Periodic Table
• Use the directions & information sheet to color-code your Periodic Table
1. Color Hydrogen pink2. Color the metalloids purple - 3. Color the metals yellow4. Color the nonmetals orange5. Color the lanthanides red6. Color the actinides green
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The Periodic Table• Use the directions & information sheet to color-code your Periodic Table
1. Place one black dot in each box of the alkali metals2. Draw a horizontal line in each box of the alkaline earth
metals3. Draw a diagonal line in each box of the transitional
metals4. Draw brown circles around each box of the halogens5. Draw checkerboard lines in each box of the Nobel gases6. Using a black color, trace the zig zag line that separates
the metals from the nonmetals
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The Periodic Table
• Use the directions & information sheet to color-code your Periodic Table
1. Make a key to indicate which color identifies which group
2. Be sure to write– Write your full name– REGULAR Science teacher’s Name & – REGULAR Science class period ON THE BACK OF THIS SHEET
• this will be turned in for a grade
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E R I O D
GROUP
MetalsNonmetalsMetalloidsNobel Gases
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The Periodic Table
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The Periodic Table
• EXIT TICKET: – on the OUTSIDE of your name tent – write:• your REGULAR Science teacher’s Name & • REGULAR Science class period
– on the INSIDE of your name tent – write:“The Table of Elements is called the Periodic Table because … (you complete this sentence)