Chapter 1: Matter in Our Surroundings Quiz Test Sagar Tuition Classes Because Every Child Deserves the Best Education Physical Nature of Matter Understanding that matter is made up of particles and is continuous in nature. Characteristics of Particles of Matter Particles of matter are very small, have space between them, and are in constant motion. States of Matter Classification into solids, liquids, and gases based on properties like shape and volume. Properties of the States of Matter Detailed comparison of solids, liquids, and gases: compressibility, fluidity, rigidity. Can Matter Change its State? Understanding how matter changes state upon heating or cooling. Effect of Temperature and Pressure on States Role of heat and pressure in changing solid, liquid, and gas states (e.g. melting, boiling, condensation). Evaporation Process of slow vaporization from the surface of a liquid below boiling point. Factors Affecting Evaporation Surface area, temperature, humidity, and wind speed affect the rate of evaporation. Evaporation Causes Cooling Explanation of how evaporation leads to cooling using examples like sweating and wet clothes.