Question

Which of the following is not a homogeneous mixture?

A. Mixture in which substances are evenly mixed on the atomic level but not bonded together
B. Solution
C. Air
D. Mixture in which you can see the different substances with unaided eyes

Answer 1

Option D is not a homogeneous mixture because it describes a situation where the different substances of the mixture can be seen with the unaided eye, indicating that it is a heterogeneous mixture.

Step-by-step explanation:

The question is asking which of the options provided is not a homogeneous mixture. A homogeneous mixture is defined as a mixture that is uniform throughout, and its different components cannot be observed separately. This means that in a homogeneous mixture, substances are mixed at the atomic or molecular level and are evenly distributed.

Option A describes a homogeneous mixture where substances are evenly mixed but not chemically bonded.

Option B, a solution, is also a type of homogeneous mixture.

Option C, air, is another example of a homogeneous mixture where various gases are evenly mixed and cannot be seen separately with the eye.

Option D is the correct answer because it describes a mixture where you can see the different substances with the unaided eye, which is characteristic of a heterogeneous mixture, not a homogeneous mixture.

Answer 2

D. as such mixtures are called suspensions .....here u can easily see the substances floating around.....this is heterogenous ( opposite to homogeneous )
examples are sand and water mixture where you can see by practically trying it that the sand will rise inside water and move around but after a while the sand will settle at bottom........these mixtures are not homogeneous ......

HOPE IT HELPED !!