Class 8 Science Chapter 9 The Amazing World of Solutes, Solvents, and Solutions is a high-frequency chapter in the CBSE Class 8 Science exam. These class 8 science handwritten notes chapter 9 The Amazing World of Solutes, Solvents, and Solutions follow the 2026-27 NCERT and cover solute, solvent and solution, uniform and non-uniform mixtures, saturated and unsaturated solutions..
- CBSE Class 8 Weightage: a scoring chapter in the Science paper, asked in short and long answers.
- What the notes cover: solute, solvent and solution, uniform and non-uniform mixtures, saturated and unsaturated solutions, concentration and solubility.
- Best for: quick revision before Class 8 exams and a strong base for Class 9.
You can read the complete class 8 science handwritten notes for The Amazing World of Solutes, Solvents, and Solutions, with key terms, boxed definitions, and quick revision points, in the PDF below.
These handwritten notes are written by subject teachers, mapped to the 2026-27 NCERT, and checked against the last five years of CBSE Class 8 Science papers.
What the The Amazing World of Solutes, Solvents, and Solutions Handwritten Notes Cover
This chapter is about how substances dissolve in one another to form solutions. It covers solutes, solvents, how much can dissolve, and the idea of density that decides why things float or sink.
- Solute, solvent and solution
- Uniform and non-uniform mixtures
- Saturated and unsaturated solutions
- Concentration and solubility
- Effect of temperature on solubility
- Solubility of gases in water
- Why objects float or sink
- Density and its formula
- Measuring mass and volume
- Effect of temperature and pressure on density
The Amazing World of Solutes, Solvents, and Solutions Self-Assessment Quiz
Try these quick questions after you read the notes. Tap each question to check your answer. They cover the points CBSE asks most often.
In a salt water solution, the salt is the?
(a) solvent (b) solute (c) solution (d) mixture
Answer: (b) solute - it is the solid that dissolves in the water
A solution that can dissolve no more solute at a given temperature is?
(a) unsaturated (b) dilute (c) saturated (d) concentrated
Answer: (c) saturated - it has reached its limit at that temperature
The formula for density is?
(a) volume divided by mass (b) mass times volume (c) mass divided by volume (d) mass plus volume
Answer: (c) mass divided by volume - density is mass per unit volume
An object will float in water if its density is?
(a) more than water (b) less than water (c) equal to water (d) zero
Answer: (b) less than water - lighter substances tend to float
As temperature rises, the solubility of a gas in water usually?
(a) increases (b) decreases (c) stays same (d) becomes zero
Answer: (b) decreases - warm water holds less dissolved gas
The Amazing World of Solutes, Solvents, and Solutions Topic-wise Weightage for CBSE Class 8 Science
Some parts of this chapter are asked more often than others. The table below shows which sub-topics to revise first, based on recent CBSE Class 8 question trends.
| Sub-topic | Weightage | CBSE Frequency |
|---|---|---|
| Solute, solvent and solution | High | asked often |
| Density and its formula | High | asked often |
| Saturated, unsaturated and solubility | High | asked often |
| Effect of temperature on solubility | Medium | asked sometimes |
| Measuring volume by displacement | Medium | asked sometimes |
| Solubility of gases | Low | asked rarely |
Key Terms and Ideas in The Amazing World of Solutes, Solvents, and Solutions
These are the terms and ideas the exam asks about most. Learn each one so you can define it and use it in your answers.
| Term / Idea | What it means |
|---|---|
| Solute | the substance that dissolves, usually the solid or smaller amount |
| Solvent | the substance that does the dissolving, usually the liquid or larger amount |
| Solution | a uniform mixture formed when a solute dissolves in a solvent |
| Saturated solution | a solution that can dissolve no more solute at that temperature |
| Unsaturated solution | a solution that can still dissolve more solute |
| Concentration | the amount of solute present in a fixed amount of solution |
| Solubility | the maximum amount of solute that dissolves in a fixed amount of solvent at a set temperature |
| Density | the mass present in a unit volume of a substance, found by mass divided by volume |
| Measuring cylinder | a tall narrow container used to measure the volume of a liquid |
| Meniscus | the curved surface of a liquid in a measuring cylinder that you read for the value |
How Collegedunia's Handwritten Notes Help You Revise The Amazing World of Solutes, Solvents, and Solutions
These notes are made for the night before the exam. They keep the facts short and easy to scan. Collegedunia maps every point to the 2026-27 NCERT.
- Clear handwriting: each topic is written in neat, easy-to-read handwriting.
- Boxed key terms: the main terms and definitions are boxed by hand for fast recall.
- Diagrams and tables: simple hand-drawn tables and charts make ideas clear.
- Colour-coded headings: new sub-topics stand out, so you find any section in seconds.
How to Use These Handwritten Notes for Class 8 Science Revision
Use these class 8 science handwritten notes in two passes. Read them slowly once for the full chapter. Then, near the exam, read only the boxes and key terms for a fast recall.
- Read the notes once with the NCERT chapter open beside you.
- Say each key term and idea in your own words.
- Practise one long-answer question from a past paper.
- On the last day, revise only the key terms and the boxes.
Class 8 Science Handwritten Notes for All Chapters
The table below links the class 8 science handwritten notes for every chapter. Use it to jump to any other chapter's notes.
The Amazing World of Solutes, Solvents, and Solutions Class 8 Science Handwritten Notes FAQs
Ques. Where can I download The Amazing World of Solutes, Solvents, and Solutions Class 8 Science Handwritten Notes PDF?
Ans. You can download the The Amazing World of Solutes, Solvents, and Solutions Class 8 Science Handwritten Notes PDF directly from this page. Both the Normal and HD versions are free.
Ques. Are these handwritten notes aligned with the 2026-27 NCERT?
Ans. Yes. These notes follow the current 2026-27 syllabus for Class 8 Science. the difference between a solute and a solvent
Ques. How many pages is the Class 8 Science The Amazing World of Solutes, Solvents, and Solutions Handwritten Notes PDF?
Ans. The notes run about 20 pages. They cover the full chapter with key terms, hand-drawn boxes, and a short self-assessment quiz.
Ques. What is the main idea of the 8th standard Science chapter The Amazing World of Solutes, Solvents, and Solutions?
Ans. The chapter shows how solutions form when a solute dissolves evenly in a solvent, and how much solute can dissolve depends on the solvent and temperature. It also explains density, which is mass per unit volume, and uses it to understand why some objects float while others sink.
Ques. Are these The Amazing World of Solutes, Solvents, and Solutions notes enough for the CBSE Class 8 exam?
Ans. Yes, for revision. The Collegedunia handwritten notes cover every key point and exam term. Read them with the NCERT chapter and practise past questions.
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