a few elements comprise the largest portion of the solid Earth, living matter, the oceans, and the atmosphere.
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recognize that the number of electrons in the outermost energy level determines an element’s chemical properties or chemical reactivity.
given a chemical formula of a compound, identify the elements and the number of atoms of each that comprise the compound.
identify the reactants and products in a given chemical equation formula.
describe, in simple terms, the processes that release nuclear energy (i.e., nuclear fission and nuclear fusion). Create a simple diagram to summarize and compare and contrast these two types of nuclear energy.
construct and use models and simulations to represent and/or explain the atom and phases of matter; evaluate the limitations of models used, when appropriate (PS.2 c)