Changes

A change in which the [[atom]]s or [[molecule]]s in a substance stay the same.<ref>Wile, Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998.</ref>

A '''physical change''' is a change in which the [[atom]]s or [[molecule]]s in a substance stay the same.<ref>Wile, Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998.</ref>

Some examples include changes in the state of matter: melting ([[solid]] to [[liquid]]), evaporation ([[liquid]] to [[gas]]) and [[sublimation]].  Many times, dissolution is also a physical change, such as when [[salt]] is dissolved, as the [[water]] can be evaporated.  

Some examples include changes in the state of matter: melting ([[solid]] to [[liquid]]), evaporation ([[liquid]] to [[gas]]) and [[sublimation]].  Many times, dissolution is also a physical change, such as when [[salt]] is dissolved, as the [[water]] can be evaporated.