![]() Physical changes occur when heating or cooling is done. For example, the phase transition of matter changes the density of matter. ![]() A physical change of matter changes the physical properties of a substance. The phase transition occurs when substances are cooled or heated. The major states of matter are solid state, liquid state, and gaseous state. Sometimes the phase or the state of matter is changed. Therefore, after a physical change, new substances are not formed.Ī physical change of a substance may change its color, size, shape, etc. In other words, physical changes affect the form of chemical substance without changing the chemical composition of it. Key Terms: Chemical Change, Decomposition, Density, Irreversible, Phase Transitions, Physical Change, Reversible, SynthesisĪ physical change is the change of matter that occurs without changing the chemical composition of matter. What is the Difference Between Physical and Chemical Change Chemical reactions cause the changes of chemical composition of substances by either forming new chemical bonds or by breaking down existing chemical bonds. Chemical changes occur during chemical reactions. Most of the physical changes include phase transitions where the phase or the state of matter is changed. This is the main difference between physical and chemical change. Chemical changes occur by changing the chemical composition of substances. Physical changes occur without changing the chemical arrangement of a substance. ![]() Main Difference – Physical vs Chemical Change
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