Brass is an alloy composed primarily of copper and zinc and appears macroscopically…
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 and appears macroscopically uniform. Which classification and reasoning are most consistent with its composition?
(a) Brass is a pure element because it consists solely of metal atoms.
(b) Brass is a homogeneous mixture because it contains two different metallic elements distributed uniformly at the atomic level.
(c) Brass is a pure compound because the copper-to-zinc ratio is constant throughout the sample.
(d) Brass is a heterogeneous mixture because the different metals remain in separate phases inside the alloy.