Which of the following combinations are both best classified as heterogeneous mixtures?(1 point) Responses salad and dirt salad and dirt air and salad air and salad water and air water and air dirt and air
salad and dirt
The combinations that are best classified as heterogeneous mixtures are:
1. Salad and dirt
2. Air and salad
3. Water and air
4. Dirt and air
To determine which combinations are best classified as heterogeneous mixtures, we need to understand what a heterogeneous mixture is. A heterogeneous mixture is a combination of two or more substances that can be physically separated.
Now, let's break down each combination and determine if they meet the criteria:
1. Salad and dirt: This combination contains different substances (vegetables and soil) that can be easily physically separated. Therefore, it is a heterogeneous mixture.
2. Air and salad: While air is a mixture of various gases, it is considered homogeneous because it appears uniform and cannot be easily physically separated. Therefore, this combination is not a heterogeneous mixture.
3. Air and salad: As already mentioned, air is considered homogeneous. Therefore, this combination is not a heterogeneous mixture.
4. Water and air: Water and air are both mixtures but appear homogeneous and cannot be easily physically separated. So, this combination is not a heterogeneous mixture.
5. Water and air: Same as the previous explanation, this combination is not a heterogeneous mixture.
6. Dirt and air: Dirt is a mixture of soil, gravel, organic matter, etc. whereas air is a homogeneous mixture of gases. These two are easily distinguishable and can be physically separated. So, this combination is a heterogeneous mixture.
Based on the analysis, the combinations that are best classified as heterogeneous mixtures are:
- Salad and dirt
- Dirt and air