A homogeneous mixture is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture. The composition of the mixture is the same throughout. On the other hand, a heterogeneous mixture is a mixture where the components of the mixture are not uniform or have localized regions with different properties. Different samples from the mixture are not identical to each other.

I. Coffee is a homogeneous mixture because it is uniform throughout. When you stir a cup of coffee, it doesn't separate into layers.

II. Soil is a heterogeneous mixture because it is composed of different substances like minerals, organic matter, water, and air that are not uniformly distributed.

III. Air is a homogeneous mixture because the gases that make up air (mostly nitrogen and oxygen) are evenly distributed.

IV. A sand-water mixture is a heterogeneous mixture. If you take two samples from different parts of the mixture, they might have different proportions of sand and water.

So, the correct answer is c. homogeneous = I, III; heterogeneous = II, IV.

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A homogeneous mixture is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture. The composition of the mixture is the same throughout. On the other hand, a heterogeneous mixture is a mixture where the components of the mixture are not uniform or have localized regions with different properties. Different samples from the mixture are not identical to each other.

I. Coffee is a homogeneous mixture because it is uniform throughout. When you stir a cup of coffee, it doesn't separate into layers.

II. Soil is a heterogeneous mixture because it is composed of different substances like minerals, organic matter, water, and air that are not uniformly distributed.

III. Air is a homogeneous mixture because the gases that make up air (mostly nitrogen and oxygen) are evenly distributed.

IV. A sand-water mixture is a heterogeneous mixture. If you take two samples from different parts of the mixture, they might have different proportions of sand and water.

So, the correct answer is c. homogeneous = I, III; heterogeneous = II, IV.

Knowee AI · Accepted Answer

A homogeneous mixture is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture. The composition of the mixture is the same throughout. On the other hand, a heterogeneous mixture is a mixture where the components of the mixture are not uniform or have localized regions with different properties. Different samples from the mixture are not identical to each other.

I. Coffee is a homogeneous mixture because it is uniform throughout. When you stir a cup of coffee, it doesn't separate into layers.

II. Soil is a heterogeneous mixture because it is composed of different substances like minerals, organic matter, water, and air that are not uniformly distributed.

III. Air is a homogeneous mixture because the gases that make up air (mostly nitrogen and oxygen) are evenly distributed.

IV. A sand-water mixture is a heterogeneous mixture. If you take two samples from different parts of the mixture, they might have different proportions of sand and water.

So, the correct answer is c. homogeneous = I, III; heterogeneous = II, IV.

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