1. Which of the following is a homogeneous mixture?
a. Diamond
b. A smoke cloud
c. Ethanol
d. Gasoline
e. Muddy wate
To determine which of the options is a homogeneous mixture, we need to understand what a homogeneous mixture is. A homogeneous mixture is a combination of two or more substances that are evenly distributed throughout. In other words, it looks the same throughout, regardless of the amount of each component.
Now, let's analyze each option one by one:
a. Diamond: Diamond is a pure form of carbon and is not a mixture. Therefore, it is not a homogeneous mixture.
b. A smoke cloud: A smoke cloud is a mixture of small solid particles or liquid droplets suspended in the air. However, the composition of a smoke cloud can vary, and it may not be evenly distributed. So, it is not a homogeneous mixture.
c. Ethanol: Ethanol is a pure substance, specifically an alcohol compound. It is not a mixture and therefore not a homogeneous mixture.
d. Gasoline: Gasoline is a mixture of various hydrocarbon compounds. Although it can have different components, in its typical form, gasoline is a homogeneous mixture. The individual components are uniformly distributed, giving it a consistent appearance and properties. Therefore, gasoline is a homogeneous mixture.
e. Muddy water: Muddy water is a mixture of water and solid particles (such as soil or sediment). It is not uniformly distributed and has visible particles settled at the bottom. Therefore, muddy water is not a homogeneous mixture.
Based on these explanations, the correct answer is d. Gasoline.