Chemistry teacher

  Matter – Complete Notes (NEET Chemistry) Matter in Chemistry: Learn the states of matter, classification, atoms, molecules, compounds, and mixtures with easy diagrams. Chapter 1: Matter Around Us What is Matter? Definition: Anything that has mass and occupies space (volume) is called matter . Examples Water Air Wood Iron Human body Oxygen Characteristics of Matter Matter is made up of tiny particles called constituent particles . These particles have the following properties: 1. Particles are in Continuous Motion The particles of matter are always moving. Solids → Vibrate about fixed positions. Liquids → Move freely. Gases → Move very fast. Example: Perfume smell spreads throughout a room. 2. Particles have Spaces Between Them There is empty space between particles. The space is: Least in solids More in liquids Maximum in gases Example: Sugar dissolves in water because sugar particles occupy spaces between water particles. 3. Particles Attract Each Other Particles attract one...

  Complete Notes on Matter Properties & Measurement in Physics Visual explanation of physical properties of matter including mass, volume, density, and temperature using scientific instruments. - Dr.Sanjaykumar Pawar  📘  1.3 Properties of Matter and Their Measurement 1.3.1 Physical and Chemical Properties 🔹 1. What are properties of matter? Every substance has its own special characteristics . These characteristics are called properties . Example: Water is colorless Iron is hard and magnetic 🔹 2. Types of properties Properties of substances are divided into two main types : (A) Physical properties Can be seen or measured without changing the substance. No new substance is formed. ✳️ Examples: Colour (e.g., copper is reddish-brown) Odour (smell) Melting point (ice → water at 0°C) Boiling point (water boils at 100°C) Density (mass per unit volume) ⭐ Key point: ✔ Identity of substance remains the same ✔ Only physical form or state may c...