Brass is a homogeneous mixture (solid solution) of copper and zinc. Again each metal by itself is a pure substance. Only when they are mixed are they a homogeneous mixture (or solid solution). Heterogeneous Mixtures Heterogeneous mixtures are not uniformly mixed on an atomic or molecular level.
Penrose is one of the small villages in the Southern Highlands, located between Bundanoon and Marulan.
Keilor Downs, Victoria. Keilor Downs is a suburb 17 km north-west of Melbourne, Victoria, Australia. Its local government area is the City of Brimbank. At the 2011 Census, Keilor Downs had a population of 10,307.