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3. condensation
2. Physcial changes are processes in which a material changes only its physical appearance. This means that the basic identity of the material stays the same. One example of a physical change is the evaporation of water. When water evaporates, it changes from a liquid state to a gas state.
4. Physical changes occur when objects or substances undergo a change that does not change their chemical composition. This contrasts with the concept of chemical change in which the composition of a substance changes or one or more substances combine or break up to form new substances.
1. temperature
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