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Elements young

Elements UNIT 1

TermDefinition
Chemical formula a representation of a compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element
Subscript the number written to the right and slightly below an element in a chemical formula; represents the number of atoms of an element present in a chemical formula
Pure substance a substance that is not mixed with any other substance
Precipitate the solid that is formed as a result of a precipitation reaction
Physical change change which alters the physical properties of a substance without changing its identity
Chemical change the formation of a new substance with different properties; cannot be undone by physical means
Element a pure substance that cannot be broken down chemically into simpler substances
Compound a pure substance made by chemically combining two or more elements; represented by a chemical formula
Chemical symbol – representation of the name of an element; written as a capital letter or a capital letter followed by a lowercase letter(s)
Chemical reaction a change caused by the interaction of two or more substances resulting in the formation of new substances
Created by: tyoung67