Particles of Matter

• Enthalpy - is the measurement of energy in a thermodynamic system.
• Enthalphy System - the heat of a system
• Temperature - the factor that affects evaporation, condensation, melting, freezing, sublimation, and deposition.
• Evaporation - the process that changes liquid water to gaseous water (water vapor)
• Evaporation (liguid to gas) - caused by heat which creates bubbles. It gains energy
• Condensation (Gas to Liquid) - particles moves slower which is decreases energy
• Condensation -  the process by which water vapor in the air is changed into liquid water
• Melting (solid to liquid) - gains energy caused by heat (kinetic energy)
• Melting -  change of a solid into a liquid when heat is applied. In a pure crystalline solid, this process occurs at a fixed temperature called the melting point; an impure solid generally melts over a range of temperatures below the melting point of the principal component.
• Freezing (liquid to solid) - looses energy due to the absence of heat
• Freezing - a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point. In accordance with the internationally established definition, freezing means the solidification phase change of a liquid or the liquid content of a substance, usually due to cooling.
• Sublimation (solid to gas) - process of transformation directly from solid to the gaseous phase, without passing through an intermediate liquid phase. It occurs when the solid particles absorbs enough energy
• Example of Sublimation: Dry Ice
• Sublimation - The phenomenon is the result of vapor pressure and temperature relationships
• Deposition (gas to solid) - gas to solid without liquid state. It occurs when thermal energy must be removed from gas.
• Example of deposition: Snow
• Evaporation

  
• Condensation

  
• Melting

  
• Freezing

  
• Sublimation

  
• Deposition

  
• Leucippus & Democritus - they believed that nature is consisted of two things: atoms and the void that surrounds them. They believe that atoms are physically but not geometrically seen.
• John Dalton - presented concrete evidence that atom is the smallest particle
• Hiringilya - the tagalog term for syringe
• Atom - the smallest particle of an elements that has all the properties of an element
• Angstrom - the measure of the size of an atom
• Molecule: a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.