Science Facts

Nuclear Transmutation: How Elements Change in Nature and Science

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Nuclear transmutation changes one element or isotope into another by altering protons or neutrons. It occurs naturally (e.g., in stars, radioactive decay) or artificially (e.g., in reactors, particle accelerators). This process is key to element formation, medical isotope production, nuclear energy, and waste reduction. While gold can be transmuted, it’s economically unfeasible.

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Class 9 / Is Matter Around Us Pure / Notes / Science

What Are Elements, Compounds, and Mixtures? Key Differences and Examples

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Matter is the substance that forms everything around us. It can be classified into elements, compounds, and mixtures. Elements contain only one type of atom, compounds are chemically bonded atoms in fixed ratios and mixtures are physical combinations of substances. These forms are fundamental in chemistry, as it reveals how substances interact.

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Chapter 1 - Matter In Our Surroundings / Class 9 / Science

What are the Characteristics of the Particles of Matter ?

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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.

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Chapter 1 - Matter In Our Surroundings / Class 9 / Science / Science Facts

Properties of Matter: Physical, Chemical, and Functional Explained With Examples

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Matter, 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.

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Class 11 / Science

Which Property of Matter Is Used to Measure Temperature?

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Temperature 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.

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Is Matter Around Us Pure / Science Facts

Solute, Solvent and Solution- Definition, Difference between, Characteristics, Examples

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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.

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Class 9 / Is Matter Around Us Pure / Notes / Science

Chapter 2: Is Matter Around Us Pure?-Class 9 – Simplified notes

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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.

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Chapter 1 - Matter In Our Surroundings / Class 9 / Science Facts

Sublimation- How Solids Turn Into Gas Without Melting

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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!

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Chapter 1 - Matter In Our Surroundings / Class 9 / NCERT Exemplar - Solved / NCERT Solutions / Science

NCERT Exemplar Solutions- Class 9 Science Chapter – 1 – Matter in Our Surroundings

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Get 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.

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Chapter 1 - Matter In Our Surroundings / Class 9 / Intext Questions and Answers / Science / Science

NCERT Solutions for Class 9 Science Chapter 1- Matter In Our Surroundings

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NCERT 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.

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