sentences: a solution is formed by one substance being dissolved in another substance & an mixture is formed by two or more substances combined together physically ->  a solution is a mixture  sugar dissolves in water when they are combined & water is a kind of substance & sugar is a kind of pure substance ->  sugar dissolving in water is an example of one substance dissolving in another substance  sugar dissolving in water is an example of one substance dissolving in another substance & a solution is formed by one substance being dissolved in another substance ->  sugar water is a kind of solution  a solution is a mixture & sugar water is a kind of solution -> sugar water is a mixture