Definition: Anything that occupies space and has mass is called matter.
Examples: Air, water, books, and even living beings.
Definition: Matter exists in three states: solid, liquid, and gas.
1. Solid: Definite shape and volume (e.g., ice).
2. Liquid: Definite volume but no fixed shape (e.g., water).
3. Gas: No fixed shape or volume (e.g., air).
1. Particles are very small: Matter is made up of tiny particles.
2. Particles have space between them: Intermolecular spaces exist.
3. Particles are in constant motion: They possess kinetic energy.
4. Particles attract each other: Intermolecular forces exist.
Definition: The intermixing of particles of two different types of matter on their own.
Example: Smell of perfume spreading in a room.
Definition: Matter can change from one state to another by heating or cooling.
Examples:
1. Melting: Solid to liquid (e.g., ice to water).
2. Freezing: Liquid to solid (e.g., water to ice).
3. Evaporation: Liquid to gas (e.g., water to vapor).
4. Condensation: Gas to liquid (e.g., vapor to water).
Definition: The process by which a liquid changes into a gas at any temperature below its boiling point.
Factors Affecting Evaporation:
1. Temperature.
2. Surface area.
3. Humidity.
4. Wind speed.
Definition: The heat energy required to change the state of a substance without changing its temperature.
Types:
1. Latent Heat of Fusion: Solid to liquid.
2. Latent Heat of Vaporization: Liquid to gas.
Definition: The process by which a solid directly changes into a gas without passing through the liquid state.
Example: Camphor, dry ice.
Boiling Point: The temperature at which a liquid changes into a gas.
Melting Point: The temperature at which a solid changes into a liquid.
Example: Water boils at 100°C and melts at 0°C.
Plasma: A state of matter consisting of free electrons and ions (e.g., stars).
Bose-Einstein Condensate (BEC): A state of matter formed at extremely low temperatures where particles behave as a single entity.
Please don not use wrong word