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During a physical change in a substance, the particles within the substance do not change their identity. Instead, they undergo a rearrangement or movement. Here's what happens to the particles in a substance during a physical change:
1. **Change in Arrangement**: The particles may move closer together or farther apart, but they remain the same particles.
2. **Change in State**: For example, when ice (solid) melts into water (liquid), the particles gain energy, allowing them to move more freely, changing the substance's state.
3. **No Chemical Bonds Broken or Formed**: In a physical change, no new substances are formed, and the particles do not break or form chemical bonds.
4. **Reversible**: Physical changes are usually reversible. For instance, when water evaporates to form steam (a gas), it can later condense back into liquid water.
By understanding these aspects, you can grasp how the particles in a substance behave during a physical change. If you have any more questions or need further clarification, feel free to ask!
