Science

• Volume


  The amount of space occupied by an object or substance
• Mass


  The amount of matter in an object
• Color


  The physical property of an object or substance with respect to the amount of light reflected by the object
• Texture


  The feel, appearance or consistency of a surface or substance
• Matter


  Substance that has mass and takes up space
• Leucippus and Democritus believed that there are many different kinds of atoms and each of them had a specific shape and size
• Leucippus and Democritus believed that all atoms move randomly around in space
• Democritus believed that any piece of matter can be divided and subdivided into very small particles but that this process ended at some point when a piece is reached that could not be further divided
• Atomos


  A Greek word that means indivisible particle
• The idea of the atom was not further explored until a little over two centuries ago when John Dalton presented concrete evidence that all matter is made of very small particles called atoms
• Atom


  The smallest particle of an element that has its properties which are made of even smaller parts: the molecules
• Molecule


  A particle consisting of two or more atoms combined in a specific arrangement. It is an electrically neutral particle. It is the smallest particle of an element or compound that exists independently
• An atom is the smallest particle of an element that has its properties
• Molecules are made of even smaller parts: the atoms
• Matter


  Anything that occupies space and has mass
• Physical properties


  Can be observed or measured without changing the composition of matter
• Chemical properties


  Describe its "potential to undergo some chemical change or reaction due to its composition such as flammability and reactivity
• Flammability


  Ability to burn
• Reactivity


  Ability for a substance to react
• Mass


  Measure of the amount of matter an object has
• Volume


  Measure of the space occupied by an object
• All matter has mass and volume
• Physical properties of matter


  • Mass
  • Volume
  • Hardness
  • Texture
  • Color
  • Elasticity
  • Malleability
  • Melting points
  • Boiling points
  • Freezing points
• Hardness


  Helps determine how an element (especially metals) might be used
• Texture


  Visual and tactile quality of a surface
• Malleability


  Easily hammered or pressed
• Matter exists in one of these three states, which are:

  Solid,Liquid,and Gas
• Substances having their particles very close to eachother. There exist strong intermolecular forces between these particles.

  Solid
• It has definite shape and volume.

  Solid
• Comprises all substances with weak intermoleculr forces. They have definite shape but no definite volume.

  Liquid
• The particles move at random directions very quickly and travel in straight-line paths.

  Gas
• It has neither a fixed shape nor a definite volume. They tend to completely occupy the container in which they are placed.

  Gas
• Particles of matter are moving all the time.
• Matter is made up of tiny particles.
• The particles of matter attract eachother.
• Melting


  The substance changes back from solid to liquid.
• Freezing


  The substance turns liquid to solid.
• Mixing


  Combining two or more substances such that maintains each chemical identity.
• Deposition


  Setting of particles or sediment onto a surface. Also refers to phase change from gas to solid
• Condensation

  The substance changes from gas to liquid