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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.

the smallest particle of matter that has distinct physical and chemical properties; consists of a nucleus which contains protons and neutrons and an electron cloud which contains electrons

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 chemical change that occurs when two or more substances combine to form a new substance; the rearrangement of atoms to produce new compounds with different chemical and physical properties

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

substance that occupies space, has mass, and is composed of microscopic particles
 

an organizational chart of all the known elements on Earth, organized based on the physical and chemical properties of each

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