What is a Homogeneous Mixture? Chemistry Definition and Examples

📚 What is a Homogeneous Mixture?

A homogeneous mixture is a type of mixture where the composition is uniform throughout. This means that when you look at a sample of a homogeneous mixture, you can't see the different components that make it up. They are evenly distributed at a molecular level.

Quick Study Guide

• 💧 Definition: A mixture with uniform composition throughout.
• 🔬 Key Feature: Components are not visually distinguishable.
• 🫙 Examples: Air, saltwater, sugar dissolved in water.
• 🌡️ Phase: Can exist in any phase (solid, liquid, gas).
• ⚗️ Separation: Separation requires methods that exploit differences in physical properties at the molecular level (e.g., distillation).

Practice Quiz

1. Which of the following is the best example of a homogeneous mixture?
   1. A) Sand and water
   2. B) Oil and water
   3. C) Saltwater
   4. D) A pizza
2. What is the primary characteristic of a homogeneous mixture?
   1. A) Visible distinct phases
   2. B) Non-uniform composition
   3. C) Uniform composition
   4. D) Large, easily separable particles
3. Which of the following separation techniques is most suitable for separating the components of a homogeneous mixture like saltwater?
   1. A) Filtration
   2. B) Decantation
   3. C) Distillation
   4. D) Centrifugation
4. Which of these mixtures is NOT homogeneous?
   1. A) Air
   2. B) Vinegar
   3. C) Brass
   4. D) Chocolate chip cookie dough
5. If you dissolve sugar in water and stir until it disappears, what kind of mixture have you created?
   1. A) Heterogeneous suspension
   2. B) Homogeneous solution
   3. C) Colloid
   4. D) Emulsion
6. In a homogeneous mixture, the solute is:
   1. A) The substance present in the largest amount
   2. B) The substance that dissolves in the solvent
   3. C) Always a solid
   4. D) Always a liquid
7. Which state of matter CANNOT form a homogeneous mixture?
   1. A) Solid
   2. B) Liquid
   3. C) Gas
   4. D) All states of matter can form homogeneous mixtures