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When a substance changes into a different substance a blank change has occurred?

If form changes but identity doesn't change then it is a physical change.


Are chemical changes when substances combine or are they when substances breaking apart?

A reaction between two substances or the decomposition of a substance are chemical changes.


Which describes the reaction of a substance to form are or more new substances?

The reaction of a substance to form one or more new substances is called a chemical reaction. This process involves the breaking of bonds in the reactants and the formation of new bonds in the products, resulting in substances with different chemical properties. Indicators of a chemical reaction can include color changes, gas production, temperature changes, or the formation of a precipitate. Overall, it transforms the original substances into entirely different materials.


When one substance changes identity it exhibits a?

When one substance changes identity, it exhibits a chemical change. This process involves the breaking and forming of bonds between atoms, resulting in the creation of new substances with different properties. Examples include reactions such as combustion, rusting, or fermentation, where the original substance is transformed into entirely different materials.


What kind of changes in substances are always physical changes?

The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.