UNIT A SCIENCE

• fluid 


  has no fixed shape and can flow
• slurries


  a mixture of a liquid and a fine powder
• pure substance


  have their own unique set of properties
• mixtures


  contain two or more pure substances
• homogeneous


  looks like one whole substance that has no other parts
• heterogeneous


  two or more visible differences in the mixture
• solution


  if a homogeneous mixture has no settling of the substance it was made of
• suspension


  in a heterogeneous mixture where the particles settle
• colloid


  heterogeneous mix where particles don't settle
• solute


  substance that dissolves
• solvent


  substance that does the dissolving
• concentration


  the actual amount of solute in a given amount of solvent
• solubility 


  the limit of concentration
• saturated solution


  when more solute can dissolve in a given amount of solute at a specific temperature
• unsaturated solution


  when more solute can dissolve into a mixture
• supersaturated solution


  when more than what's expected dissloves
• universal solvent


  water
• thermal pollution


  when the decrease in solubility of gasses can have a lasting impact on the environment
• 1. all matter is made of tiny particles
  2. the particles are always moving
  3. the particles are always bonded together
  4. there is always space between them
• how to affect the rate of dissolving

  temperature, size of pieces, agitation
• flow rate


  how fast a fluid can flow
• viscosity


  a substance's resistance to flow
• density


  amount of matter in a given volume