chemical equations and reactions

• average atomic mass


  the weighted average of all the naturally occurring isotopes of the element
• the mole 


  unit to count number of particles
• molar mass


  mass in grams, g/mol
• avogadros number 


  6.022 x 10^23
• number of moles


  mass divided by molar mass
• solute 


  the substance being dissolved
• solvent 


  the substance doing the dissolving
• dilute solution 


  little solute, large quantity of solution
• concentrated solution 


  relatively large amount of solute in a given quantity of solution
• weight/volume % 


  g of solute / 100ml of solution x 100
• weight/weight %


  g of solute / 100g of solution x 100
• hypertonic


  cell shrivels
• hypotonic 


  cell swells and bursts
• milligram percent 


  mg of solute / 100ml of solution x 100
• parts per million 


  mg of solute / 1 litre of solution
• parts per million 


  mg of solute / 1 litre of solution
• molarity 


  moles of solute / litres of solution