Standards with the same topic and subject but for other grades
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.
acids, bases, salts
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)
Atomic mass is equivalent to the number of protons and neutrons in the atom of an element (PS.4 a).
our understanding of atoms has developed over time;
Matter is anything that has mass and occupies space. All matter is made up of small particles called atoms. Matter can exist as a solid, a liquid, a gas, or plasma.
Many scientists have contributed to our understanding of atomic structure.