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Knowledge and Skills Statement

Matter and energy. The student understands that matter can be classified according to its properties and matter is conserved in chemical changes that occur within closed systems.

a type of change in which a new substance is made from one or more previous substances; occurs during a chemical reaction; a change where the atoms of the original substances are rearranged to make new elements and/or compounds

a physical system that does not allow transfer of matter in or out, although energy can flow into and out of the system

the smallest particles of matter that have distinct physical and chemical properties; consist of a nucleus which contains protons and neutrons and an electron cloud which contains electrons

observable characteristics of matter that can be used to identify particular materials