chemistry

• Energy determines the state


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• extensive property


  one that Does depend on the amount of the substance present.
• Intensive property


  One that DOES NOT depend on the amount of the Subtance present.
• Boiling point / condensation point


  the exact temperature at which liquid becomes a gas or gas to liquid.
• Melting Point /freezing point


  the exact temperature at which a solid beccomes a liquid or a liquid become a Solid.
• State (phase) of matter

  solid, liquid, gas Plasma
• Malleability


  Ability of a subtance tobe hammered flat and to retain
• Ductility


  Ability of a substance to be stretched into a wire
• luster


  the way that a substance reflects light (metalic non-metallic, glassy. pearly, dull).
• highest density element

  Osmium 23 g/cm3
• Lovest density Element

  Hydrogen 0.0009g/cm3
• Density


  the ratio of mass to volume reflects the degree of packing of particles in matter.
• Volume


  The amount of space an space object occupies (in ml, L, cm³,m etc)
• Mass


  the amount of matter in an object (in g or kg).
• Temperature


  A measure of the average kinetic energy (energy of motion) of of particles subtance
• Texture


  how the substance looks and feels.
• color


  how the object absorbs and reflects light
• Physical property


  A trait of matter that can be observed or measured without changing the chemical composting of the matter.
• Changing states

  • state change

  • phase change

  • Physical change
• Add or subtract Energy


  -when evergy is added, particles move faster

  -When energy is taken away, particles move slower?
• Particles in Plasma


  • Are electrically charged

  • Have extremely high energy levels.
• Plasma


  • lightning is a plasma

  • Used in fluorescent light bulbs and Neon lights

  • Plasma is a lot like a gas, but the particles are dectically charged
• Gasses


  • Gasses spread out to fill the entire

  • space given and do not have definite volume

  • Gasses have mass

  • Gasses take up space
• Particles in liquids


  • Are loosely packed

  • Have medium energy levels

  • particles flow around each other
• liquids


  • liquids take the shape of their container and have definite volume • liquids have mass

  • liquids take up space.
• Particles in Solids


  • Are packed tigthly together.

  • Have verry little energy.

  • vibrate in place
• Solids


  • Solids have definite shape and definite Volume

  • Solids have mass.

  • Solids take up spaces.
• Matter


  is anything that has mass and takes up space
• particles in gases move freely, have lots of energy