Unit 1 lesson 14 intro to periodic table
Transcript of Unit 1 lesson 14 intro to periodic table
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• The periodic table is a chart of the elements arranged into rows and columns according to their physical and chemical properties.
• It can be used to determine the relationships among the elements.
What is the periodic table?
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11
Na
Sodium
22.990
11
Na
Sodium
22.990
Atomic # = ______
Atomic Mass = _________
Mass # = _________
# of Protons = ________
# of Neutrons = ________
# of Electrons = ________
Atomic NumberAtomic Number
Element symbolElement symbol
Element nameElement name
Atomic MassAtomic Mass1111
22.99022.990
23231111
11111212
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Arranged according to similarities or patterns
Arranged according to similarities or patterns
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You can identify many of the properties of an element from its placement on the periodic table.
Today’s Periodic Table
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The table is organized into columns, rows, and blocks, which are based on certain patterns of properties.
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• A group is a column on the periodic table.
• Elements in the same group have similar chemical properties and react with other elements in similar ways.
Today’s Periodic Table (cont.)
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Today’s Periodic Table (cont.)
What can you infer about the properties of two elements in the same group?
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• The rows on the periodic table are called periods.
• The atomic number of each element increases by one as you read from left to right across each period.
Today’s Periodic Table (cont.)