Brass is an alloy composed primarily of copper and zinc
CHEMISTRY · Single correct · CBSE · Chemistry · Is Matter Around Us Pure? · Is Matter Around Us Pure?
Problem
Brass is an alloy composed primarily of copper and zinc. A machinist removes shavings from opposite ends of a large brass rod and finds identical mass percentages of copper in both samples. Which classification best describes brass, and what observation supports this classification?
(a) Heterogeneous, supported by the presence of more than one metallic element in the alloy.
(b) Compound, supported by the constant mass ratio of copper to zinc.
(c) Homogeneous, supported by the identical composition of samples taken from different locations.
(d) Heterogeneous, supported by the fact that zinc can be selectively oxidized from brass.