CBSE Class Notes, Worksheets, Question Answers, Diagrams , Definitions , Diffrence between , Maths Concepts, Science Facts Online – Classnotes123
Particles of matter are extremely small, constantly in motion and have spaces between them. They possess mass, attract each other and can diffuse naturally. These fundamental characteristics explain how solids, liquids and gases behave differently. Understanding these properties is essential in physics and chemistry for grasping the nature and structure of all matter.
What are the Characteristics of the Particles of Matter ? Read MoreMatter, which occupies space and has mass, exhibits both physical and chemical properties. Physical traits like density or color may be extensive or intensive, while chemical traits involve transformations, such as flammability or reactivity. Matter exists in distinct states -solid, liquid, gas, plasma, and Bose-Einstein condensate each with unique behaviors. Specialized properties aid in scientific and industrial applications.
Properties of Matter: Physical, Chemical, and Functional Explained With Examples Read MoreTemperature is measured using the property of thermal expansion, where matter increases in volume with heat due to increased particle motion. This expansion is predictable and used in thermometers and other devices. As temperature rises, particle spacing increases, causing expansion in solids, liquids, and gases, making thermal expansion a reliable way to measure temperature.
Which Property of Matter Is Used to Measure Temperature? Read More
A solution is a homogeneous mixture of solute and solvent. Solutes dissolve in solvents without settling, forming a single-phase system. Solvents determine the solution’s state and aid dispersion. Solubility depends on factors like temperature, pressure, and polarity. Types of solutions and solvents vary by state and composition. Examples include saltwater, soda, alloys, and perfumes.
Solute, Solvent and Solution- Definition, Difference between, Characteristics, Examples Read More
Matter around us is mostly mixtures, not pure substances. Mixtures can be homogeneous or heterogeneous. Solutions, suspensions, and colloids differ in properties. Pure substances include elements and compounds, with fixed composition and characteristics. Physical and chemical changes alter matter differently. Separation methods help isolate components in mixtures, highlighting the difference between mixtures and pure substances.
Chapter 2: Is Matter Around Us Pure?-Class 9 – Simplified notes Read More
Sublimation is when a solid turns straight into gas without melting into liquid. This happens with things like dry ice, mothballs, and even snow in cold places. It’s used in printing, food drying, and space science. Learn how it works and where you see it in daily life!
Sublimation- How Solids Turn Into Gas Without Melting Read MoreGet NCERT Exemplar Solutions for Class 9 Science Chapter 1 – Matter in Our Surroundings, covering multiple-choice, short-answer, and long-answer questions with detailed explanations. Learn about diffusion, evaporation, intermolecular forces, and phase transitions with clear, step-by-step solutions. Ideal for CBSE students aiming for conceptual clarity and exam preparation.
NCERT Exemplar Solutions- Class 9 Science Chapter – 1 – Matter in Our Surroundings Read MoreNCERT Solutions for Class 9 Science Chapter 1 – Matter in Our Surroundings covers all textbook questions with step-by-step answers. Understand key concepts like states of matter, diffusion, density, and phase changes through detailed explanations, reasoning-based solutions, and real-life examples, making science easier for students.
NCERT Solutions for Class 9 Science Chapter 1- Matter In Our Surroundings Read More
Evaporation is a natural process where a liquid turns into gas at temperatures below its boiling point. This article breaks down the science behind evaporation, the factors that influence it-like heat, wind and humidity and how it plays a crucial role in cooling, weather cycles, and daily life.
The Science of Evaporation – Process, Factors, and Applications Read More
Evaporation isn’t just about drying puddles—it shapes our planet in surprising ways! From cooling trees to shrinking the Dead Sea and even helping forensic scientists solve crimes, this natural process plays a crucial role in weather, energy, and everyday life. Learn 15 real and unexpected facts about evaporation that will change how you think about water!
15 Surprising and Real Facts About Evaporation Read More