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part one for matter topic

Boiling When a liquid is heated and turned into a gas
Brownian motion Is the presumably random drifting of particles suspended in a fluid (a liquid or a gas)
Compressed Squeezed together to make smaller in size.
Condensation Process of changing from a vapour/gas into a liquid.
Density The mass of one cubic centimetre of a substance (g/cm3). It is calculated by dividing the mass of an object by its volume, The same applies to liquids and gases
Diffusion Gradual spreading/mixing of substances caused by the random movement of particles. Movement is from a high concentration to a low concentration.
Evaporation Change of state from liquid to gas; it can be used to separate a solute from a solvent.
Gas State of matter that has no definite shape or volume; particles are spread far apart
Liquid State of matter that has definite volume but no definite shape
Mass A measure of the amount of substance in an object. Mass is measured in kilograms. The mass of an object does not change from place to place.
Melting When a solid is heated and turned into a liquid
Osmosis Process in which water molecules move across a semipermeable membrane from a high water concentration to a low water concentration until evenly spread
Particle theory When the properties of particles that make up matter are used to explain the characteristics of solids, liquids and gases.
Particles What makes up substances
Properties Characteristics or special features of materials e.g. strength, colour, hardness.
Random Occurs without a definite pattern
Semipermeable membrane Surface with tiny holes that allows only certain particles to pass through
Solid State of matter that has definite volume and definite shape
Spreading When particles move out to give an even concentration of particles throughout the area.
Sublimation Change of state from a solid to a gas without first forming a liquid e.g. dry ice and iodine.
Volume The space that something takes up.
conduction is the movement of something such as heat or electricity through a medium (solid, liquid or gas). Solids especially metals are the better conductors as adjacent particles vibrate and pass on energy to neighbouring particles.
convection movement of particles in a liquid or gas state usually from hot to cold and often in circular motion.
adjacent next to another
radiation movement of heat energy from one surface to another without the need for particles to transfer the energy.
expansion when metal objects can heat the gaps between the particles can expand causing the object to expand.
Created by: kjsime