BackPhysical & Chemical Changes definitions
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1/17BackSkip to main contentBackPhysical Change
Alters the state or appearance of matter without modifying its chemical composition or identity. Chemical Change
Transforms matter by creating new chemical bonds, resulting in substances with different identities. Solute
Substance that becomes dispersed within a liquid, forming a solution without changing its own identity. Mixing
Combining substances so their individual identities remain, with no new chemical products formed. Crushing
Breaking down a material into smaller pieces, maintaining the original substance's identity. Rusting
Process where metals react with oxygen, forming metal oxides and altering the original material's identity. Burning
Rapid reaction with oxygen that produces new substances, often accompanied by heat and light. Metabolism
Complex series of chemical reactions in living organisms that convert food into different substances. Phase Change
Transition of matter between solid, liquid, and gas states, without altering chemical composition. Condensation
Conversion of a gas to a liquid, typically observed as water droplets forming on cool surfaces. Freezing
Transformation of a liquid into a solid, often by lowering temperature, while keeping chemical identity. Deposition
Direct change from gas to solid, bypassing the liquid state, as seen in frost formation. Fusion
Process where a solid turns into a liquid, commonly referred to as melting in everyday language. Vaporization
Transition from liquid to gas, occurring during boiling or evaporation. Sublimation
Direct transition from solid to gas without passing through the liquid phase, as with dry ice. Irreversible Change
Permanent alteration of a substance, making it impossible to return to its original state under normal conditions. Reversible Change
Modification that can be undone, restoring the original substance without forming new chemical products.
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