Sample Question for Homogeneous Mixtures

Question 1: Define a homogeneous mixture and provide two examples.

Answer:

A homogeneous mixture is a uniform blend of substances on a molecular level.

• Example 1: Saltwater, where salt dissolves completely in water, creating a uniform solution.
• Example 2: Air, a mix of gases like nitrogen and oxygen, uniformly distributed at the molecular level. In both cases, the components are evenly spread, forming a single-phase mixture.

Question 2: What distinguishes a homogeneous mixture from a heterogeneous mixture?

Answer:

A homogeneous mixture is uniform at the molecular or atomic level, meaning the components are evenly distributed throughout the mixture, resulting in a single-phase substance. In contrast, a heterogeneous mixture lacks uniformity, with distinct regions or phases containing different concentrations of components.

In a heterogeneous mixture, the substances are not uniformly distributed, and the mixture may exhibit visible differences or separations. The key distinction lies in the uniformity of composition at a microscopic level for homogeneous mixtures and the lack of uniformity for heterogeneous mixtures.

Question 3: Discuss the role of solute and solvent in a homogeneous mixture.

Answer:

In a homogeneous mixture, the solute and solvent play crucial roles in creating a uniform and well-blended solution:

Role of Solute: It is the component present in a smaller quantity and undergoes dissolution at the molecular or atomic level.

Role of Solvent: It is the component present in a larger quantity and provides the medium for the solute to disperse.

Interaction: The solute dissolves in the solvent, and the resulting mixture has a uniform composition throughout and the interactions between solute and solvent molecules determine the nature of the solution (e.g., polar solvents dissolve polar solutes).

Question 4: Air is a homogeneous mixture. Explain.

Answer:

Air is considered a homogeneous mixture because it is a uniform blend of gases at the molecular level, creating a single-phase substance. The major components of air, such as nitrogen, oxygen, carbon dioxide, and other trace gases, are thoroughly and evenly mixed throughout the atmosphere. As a result, there are no visible differences or separate regions within the air. The gases that compose air interact at the molecular level, ensuring a consistent composition and uniform distribution of particles. This uniformity qualifies air as a homogeneous mixture, also known as a gaseous solution.

Question 5: Write 5 Examples of Homogeneous Mixture.

Answer:

5 examples of Homogeneous Mixture are:

• Saltwater: Salt (solute) dissolved in water (solvent).
• Sugar Solution: Sugar (solute) dissolved in water (solvent).
• Vinegar: Acetic acid (solute) mixed with water (solvent).
• Air: Nitrogen, oxygen, carbon dioxide, and other gases.
• Brass: Copper (solute) uniformly mixed with zinc (solvent).

Homogeneous Mixture is a substance composed of two or more components that are uniformly distributed at the molecular or microscopic level, creating a uniform appearance and consistent properties throughout the entire mixture. A mixture is nothing but a combination of two or more substances in which each substance maintains its chemical properties.

There are two types of mixtures i.e. homogenous mixture and heterogeneous mixture. In this particular article, we are going to learn about homogenous mixtures their types, properties, examples, and even how we can identify homogenous mixtures. We have to study Homogeneous Mixture in Class 9.