Classify each as a homogeneous mixture or a heterogeneous mixture. Select the single best answer for each part.

Question

Brass?
A saline solution?
A carbonated soft drink ?

Answer 1

• Brass: Homogeneous mixture
• A saline solution: Homogeneous mixture
• A carbonated soft drink: Heterogeneous mixture

To clarify:

• Brass is an alloy made from copper and zinc, and it has a uniform composition throughout, making it a homogeneous mixture.
• A saline solution is a uniform mixture of salt and water, also considered homogeneous.
• A carbonated soft drink contains dissolved gases and solids (like sugars and flavorings) that may create bubbles or layers, indicating that it is a heterogeneous mixture, especially when you consider the presence of carbonation and potential separation over time.