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Atomic Number

The number of protons in an atom. Defines arrangement of periodic table.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

Atomic Number

Explains the arrangement of the periodic table.

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Atomic Number

Explains the arrangement of the periodic table.

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Atomic Number

by Sara E. Vogt //at grade

Explains the arrangement of the periodic table.

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Atomic Number

Explains the arrangement of the periodic table.

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4.15 Atomic Number

Explains the arrangement of the periodic table.

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4.15. Atomic Number

Explains the arrangement of the periodic table.

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4.15 Atomic Numbers

Explains the arrangement of the periodic table.

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Atomic Number

Explains the arrangement of the periodic table.

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4.15 Atomic Numbers.

Explains the arrangement of the periodic table.

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• Video

Atomic Number and Mass Number

Shows how the atomic number is determined by the number of protons and that the periodic table is arranged by increasing atomic number. Also goes into mass number, showing examples that help illustrate that the mass number is the sum of the protons and neutrons.

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• Practice
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Atomic Number Quiz

Reviews the arrangement of the periodic table

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To organize information and provide a visual representation that shows how factors (causes) produce an effect using a Cause and Effect Diagram.

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To increase reading comprehension, activate prior knowledge, develop collaboration and communication with peers, and determine how key vocabulary words relate to one another using Text Scan.

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• Real World Application

Part of the Family

Reviews the relationship between atomic number and atomic mass.

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