Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

9. Solutions

Solutions

GOB Chemistry

9. Solutions

Solutions

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3:46 minutes

Problem 63a

Textbook Question

Identify each of the following as characteristic of a solution, colloid, or suspension:
a. a mixture that cannot be separated by a semipermeable membrane

Verified step by step guidance

Step 1: Begin by understanding the three types of mixtures: solutions, colloids, and suspensions. A solution is a homogeneous mixture where the solute is completely dissolved in the solvent. A colloid is a mixture where the particles are larger than in a solution but do not settle out. A suspension is a heterogeneous mixture where particles are large enough to settle out over time.

Step 2: Recall the property of separation by a semipermeable membrane. A semipermeable membrane allows small particles, such as ions or molecules in a solution, to pass through, but it blocks larger particles like those in colloids or suspensions.

Step 3: Analyze the given statement: 'a mixture that cannot be separated by a semipermeable membrane.' This means the particles in the mixture are too large to pass through the membrane.

Step 4: Compare this property to the characteristics of solutions, colloids, and suspensions. Solutions can pass through a semipermeable membrane because their particles are very small. Colloids cannot pass through because their particles are larger, but they do not settle out. Suspensions also cannot pass through, but their particles are large enough to settle out over time.

Step 5: Based on the inability to pass through a semipermeable membrane and the lack of settling, identify the mixture as a colloid.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Solution

A solution is a homogeneous mixture where one substance (the solute) is completely dissolved in another (the solvent). Solutions are characterized by their ability to pass through a semipermeable membrane, as the solute particles are at the molecular or ionic level, making them too small to be filtered out.

Colloid

A colloid is a mixture where fine particles of one substance are dispersed within another without settling out. Colloidal particles are larger than those in a solution but smaller than those in a suspension, typically ranging from 1 nanometer to 1 micrometer. They do not separate by filtration but can scatter light, a phenomenon known as the Tyndall effect.

Suspension

A suspension is a heterogeneous mixture in which larger particles are dispersed in a liquid or gas but are not dissolved. These particles are typically visible and will settle out over time if left undisturbed. Unlike solutions and colloids, suspensions can be separated by filtration or sedimentation due to the larger size of the particles.

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