| A | B |
|---|
| Chemical change | the formation of a new substance with different properties; cannot be undone by physical means |
| 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 |
| Chemical reaction | a change caused by the interaction of two or more substances resulting in the formation of new substances |
| Chemical symbol | representation of the name of an element; written as a capital letter or a capital letter followed by a lowercase letter(s) |
| Compound | a pure substance made by chemically combining two or more elements; represented by a chemical formula |
| Element | a pure substance that cannot be broken down chemically into simpler substances |
| Physical change | change which alters the physical properties of a substance without changing its identity |
| Precipitate | the solid that is formed as a result of a precipitation reaction |
| Pure substance | a substance that is not mixed with any other substance |
| 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 |
