By: Martinez Scott, Brandon Weatherspoon

 Has a definite shape and a definite volume.  The particles that make up a solid are packed very closely together  In many solids, the particles form a regular repeating pattern  Solids are made up of crystals such as crystalline solids

 Has a definite volume but no shape of its own  With out an container liquids spreads into a wide shallow puddle  Particles in a liquid are packed almost as closely as in a solid  A liquid has no definite shape because its particles are free to move

 Just like a liquid gas is a fluid  Gas can change volume very easily  If put into a closed container the particles will either spread apart or be squeezed together as they fill the container  As they move gas particles spread apart, filling all the space available  A gas has neither definite shape nor volume

 Particles of a liquid have more thermal energy than particles of the same substance in solid form  What is the change in state from a solid to a liquid? The answer is melting.  If melting occur at specific temperature it is called its melting point  The change of state from liquid to solid is called freezing

 The change from a liquid to a gas is called vaporization  Vaporization takes place when the particles in a liquid gains enough energy to form a gas  Vaporization that takes place only on the surface of a liquid is called evaporation  Boiling occurs when a liquid changes to a gas below its surface as well as at the surface

 Sublimation occurs when the surface particles of a solid gains enough energy that they form a gas  During sublimation particles of a solid do not pass through the liquid state as they form a gas  An example of sublimation occurs with dry ice because it is a common name for solid carbon dioxide

 The first type of law is Boyle’s law.  The second type of law is Charles law.

 Boyle’s law is the relationship of the pressure and the volume of a gas.  When the pressure goes up the volume goes down

 Charles’s law is the principle of temperature and pressure and volume.  When the temperature of a gas increased at constant pressure it’s volume increase.

 Viscosity- a liquid’s resistance to flowing.  Surface tension- the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together.  Melting point- the temperature at which a substance changes from a solid to a liquid.  Vaporization- the change of state from a liquid to a gas

 Evaporation- the process that occurs when vaporization takes places only on the surface of a liquid.