Science Scope and Sequence, Elements

Science Standard III, Chemistry

Lesson 320, Elements

Describing the fundamentals of the charge-cloud atomic model

Determining the number of electrons in each energy level of an atom given the number of electrons the atom has

Defining element

Defining valence

Understanding that the electron arrangement determines an element’s chemical properties

Describing how an atom becomes an ion

Knowing how to calculate the number of neutrons an atom has

Knowing an unbalanced charge causes electricity

Understanding how electrons & protons determine chemical properties and potential energy

Stating the octet rule and naming the exceptions to the rule


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