📚 Topic Summary
In science, a mixture is a combination of two or more substances that are physically combined but not chemically bonded. Mixtures can be classified into three main types based on the size of the particles and how uniformly they are distributed: solutions, suspensions, and colloids. Understanding the differences between these types of mixtures is key to understanding many everyday phenomena, from the milk you drink to the air you breathe.
A solution is a homogeneous mixture where one substance (the solute) dissolves completely into another (the solvent). In a suspension, the particles are much larger and will settle out over time. A colloid is somewhere in between; its particles are larger than those in a solution but do not settle out like a suspension.
🧪 Part A: Vocabulary
Match the terms with their definitions:
- Term: Solution
- Term: Suspension
- Term: Colloid
- Term: Homogeneous
- Term: Heterogeneous
Definitions:
- A mixture with evenly distributed particles throughout.
- A mixture where particles settle out over time.
- A mixture with medium-sized particles that do not settle.
- A uniform mixture where one substance dissolves in another.
- A mixture with unevenly distributed particles throughout.
🔬 Part B: Fill in the Blanks
Complete the following paragraph using the words provided: Solute, Solvent, Particles, Tyndall Effect, Settling.
A solution consists of a ______ dissolved in a ______. In a suspension, the ______ are large enough to be seen and will undergo ______ over time. Colloids exhibit the ______, which is the scattering of light.
💡 Part C: Critical Thinking
Give an example of a solution, a suspension, and a colloid that you encounter in everyday life. Explain why each example fits its classification.