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Changes in Matter

Chemistry -Sipes
Horizontales
the basic unit of a chemical element
a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance.
substance that can't be broken down by non-nuclear reactions.
Verticales
Solid, liquid or gas is the _______
a usually reversible change in the physical properties of a substance, as size or shape.
anything that takes up space and can be weighed.