Find the best tutors and institutes for Class 9 Tuition
Learn Suspensions and colloids – properties and differences
In CBSE Class 9 Science, the chapter "Is Matter Around Us Pure" introduces us to different types of mixtures based on how their constituent particles interact. While true solutions, like salt dissolved in water, blend completely to form a homogeneous mixture, other mixtures do not perfectly dissolve. This brings us to the fascinating concepts of suspensions and colloids. A suspension is a heterogeneous mixture where relatively large solute particles do not dissolve but remain suspended throughout the bulk of the medium (like chalk powder in water or muddy water). A colloid, on the other hand, appears to be homogeneous like milk or fog, but it is actually a heterogeneous mixture containing much smaller particles that remain evenly distributed and refuse to settle down.
The core differences between these mixtures lie fundamentally in their particle size and stability. In a suspension, the particles are larger than 1000 nanometers (nm), making them easily visible to the naked eye. Because of their sheer weight and size, these particles are highly unstable; if left undisturbed, gravity causes them to settle at the bottom. Colloids consist of microscopic particles ranging between 1 nm and 1000 nm. Because they are so small and constantly moving in zig-zag patterns, colloidal particles are quite stable and do not settle. Another defining property is the Tyndall Effect—the scattering of a beam of light by suspended particles. Colloids contain particles perfectly sized to readily scatter light, making the path of the beam brightly visible. Suspensions also scatter light, but only until their heavy particles settle down, after which the mixture becomes clear and the effect disappears.
Take a close look at the diagram above, which visually breaks down how true solutions, colloids, and suspensions uniquely react to a beam of light. In the first beaker (True Solution), the light passes straight through invisibly because the dissolved particles are simply too tiny to interact with the light waves. However, in the middle beaker (Colloid), the path of the light beam lights up and becomes clearly visible. This is the classic demonstration of the Tyndall effect, a concept heavily tested in your Class 9 Science exams. In the third beaker (Suspension), notice the large green particles; while a few are floating and scattering light, the majority have settled at the bottom under the influence of gravity, showcasing the inherent instability of suspensions. Understanding these distinct visual behaviors and being able to tabulate their differing properties is a guaranteed way to score full marks when asked to differentiate between mixture types.
Grasping the minute differences between mixtures, compounds, and pure substances can sometimes feel confusing for students first diving into high school chemistry. If you want to build a solid foundation and master chapters like "Is Matter Around Us Pure," consider finding an expert tutor on UrbanPro. Whether you are looking for personalized CBSE Class 9 Science online tuition or prefer highly-rated local tutors in your neighborhood, UrbanPro connects you with verified educators who make complex scientific concepts incredibly easy to understand. Book your first session today to turn your science doubts into excellent exam scores!
Other Concepts in Is Matter Around Us Pure
- Elements and compounds
- Mixtures and their types (homogeneous, heterogeneous)
- Physical and chemical changes
- Solutions: solute, solvent, concentration
Other Concept Videos for Suspensions and colloids – properties and differences
Colloids vs Suspensions: Spot the Difference
CBSE - Class 9>Science>Is Matter Around Us Pure>Suspensions and colloids – properties and differences
Top Tutors who teach Suspensions and colloids – properties and differences
Top Tutor 
vatika, Jaipur 
1 student 
44 hrs of classes completed 
180 per hour 
Online Classes 
Tutor's home I am currently pursuing B.Tech in Civil Engineering. I am a final year student and I have a keen interest in teaching students. I look forward to see you in my classes.
Top Tutor Amravati Camp, Amravati 6 students 673 hrs of classes completed 350 per hour Online Classes I have been teaching Class 9 Chemistry for the past 4 years, helping students from CBSE, ICSE, and Maharashtra State Board develop a strong understanding of basic Chemistry concepts. I believe that Class 9 is the foundation year for higher classes, and building clarity at this stage makes Chemistry easy and enjoyable in the long run. Many students face difficulty understanding Chemistry because they try to memorize facts without understanding the "why" behind them. My teaching approach focuses on making concepts crystal clear through simple language, real-life examples, visual demonstrations, and regular practice. In my Class 9 sessions, I focus on: ✔ Detailed explanation of fundamental concepts like Matter, Atoms & Molecules, Structure of the Atom, Laws of Chemical Combination, and Properties of Matter ✔ Step-by-step guidance on understanding numerical problems ✔ Interactive classes with visual aids and real-life examples to make learning engaging ✔ Regular tests, assignments, and concept revision sessions ✔ Preparation not only for school exams but also to build a foundation for Class 10 and competitive exams I also help students improve their scientific thinking, observation skills, and problem-solving abilities, which builds their confidence for future studies in science. The classes are conducted in English, Hindi, or Marathi, depending on the student's comfort level. I also provide simple, easy-to-understand notes and ensure that students feel free to ask doubts at any stage. Over the years, I have seen many Class 9 students overcome their fear of Chemistry, improve their academic performance, and develop genuine interest in the subject under my guidance. Key Highlights for Class 9: ✅ 4 Years of Experience Teaching Class 9 Chemistry ✅ Focus on Concept Clarity & Scientific Thinking ✅ Real-life Examples & Visual Learning Approach ✅ Regular Tests, Notes, and Revision Sessions ✅ Foundation Building for Class 10 & Future Exams ✅ Classes in English, Hindi, and Marathi If you want your child to develop a strong foundation in Chemistry with simple explanations and personalized guidance, I would be happy to help!
Mam is really good in explaining and well trained, clearly explained the subject to my son, teacher is very good. My son said that easy to understand, thank you mam.
Top Tutor Sector 92, Gurgaon 20 students 1307 hrs of classes completed 800 per hour Online Classes 
Student's Home Tutor's home Teaching since last 20 years
Amit ji is a fantastic teacher. My daughter is very happy with her studies. He is exactly what she needed, a teacher with deep understanding of his subject and a very good communicator. If there is one gripe that I may mention, it's time. We would love to have more classes to cover Physics, but he is completely booked for his time. I would highly recommend him. Thank you.
Top Tutor Anand Nagar, Pune 2 students 76 hrs of classes completed 500 per hour Online Classes Diligent B.Tech student at Indian Institute of Information Technology Pune with outstanding achievements. Qualified JEE Mains and Advanced exams, showcasing a strong aptitude for computer science. In Class 10, achieved an impressive 91% overall, excelling particularly in Maths (95%), Science (94%), and Social Science (95%). Possessing excellent communication and problem-solving skills, I aim to leverage my academic prowess to inspire and educate students in Maths, Science, and Social Science. Seeking an opportunity to contribute to educational initiatives and make a meaningful impact in teaching.
He is amazing teacher . He has deep understanding of subject and explains the concepts clearly and patiently. He encourages questions and discussions which greatly improves understanding as well as confidence .Thanks for his guidance.
Top Tutor Chetpet, Chennai 1 student 184 hrs of classes completed 600 per hour Online Classes Tutor's home I am conducting tuition at my home for the past 7yeears. I am a postgraduate in. Commerce and also hold a postgraduate diploma in computer application. Good in time management and communication skills. Use simple English language to teach students and make sure that they understand the concept. Like to conduct small tests after every class to know if the child has understood or not, and if not take up the same portion again. Always expect the students to be regular.
Find more Tutor for Suspensions and colloids – properties and differences in your City
- Delhi Science Tutors
- Bangalore Science Tutors
- Hyderabad Science Tutors
- Gurgaon Science Tutors
- Chennai Science Tutors
- Pune Science Tutors
- Faridabad Science Tutors
- Ghaziabad Science Tutors
- Noida Science Tutors
- Jaipur Science Tutors
- Jodhpur Science Tutors
- Panchkula Science Tutors
FAQ
What is the meaning of Suspensions and colloids – properties and differences?
It is a fundamental principle in Is Matter Around Us Pure that explains the nature and characteristics of Suspensions and colloids – properties and differences.
Why is Suspensions and colloids – properties and differences important for CBSE - Class 9 exams?
This concept is crucial for the exams as questions related to Is Matter Around Us Pure and specifically Suspensions and colloids – properties and differences are very common. It helps secure marks in the section effectively.
Is Suspensions and colloids – properties and differences part of the latest NCERT syllabus?
Yes, Suspensions and colloids – properties and differences is an integral part of the CBSE - Class 9 NCERT Science syllabus. It is a key topic covered in the Is Matter Around Us Pure chapter.
What are common mistakes students make with Suspensions and colloids – properties and differences?
Students often miss the minute details or fundamental definitions of Suspensions and colloids – properties and differences. Regular revision and practice are needed to master the nuances.
How should I approach learning Suspensions and colloids – properties and differences?
Read the NCERT text thoroughly to grasp the theory. Create summary notes and flowcharts to retain the key points of Suspensions and colloids – properties and differences.
How can UrbanPro help me understand Suspensions and colloids – properties and differences better?
UrbanPro connects you with experienced Science tutors who can explain Suspensions and colloids – properties and differences with simple examples. You also get access to doubt-clearing sessions and mock tests for better preparation.
