# chem. chapter 2

 The flashcards below were created by user mnmitch on FreezingBlue Flashcards. length meterm mass kilogramkg time secondss thermodynamic temperature kelvinK amount of substance molemol metric system system instrumental velocity (speed) length/time area l x l volume area x length density mass per unit volume density is measured in.... g/vol.g/cm3g/mL dm3=... 1L=1000dm3=1000mL density of water at 25 degrees C= 1.00 g/cm3 4 rules of significant digits digits other than 0 are always significant1 or more final 0s used agter the dec are alwats significant0s between 2 other significant digits are significant0s used solely for spacing the sec are not significant significant digits rule in chemistry every math prob will have an answer in 3 significant digits when a number has five or more places.... use scientific notation accuracy how close a measurement is to its actual exact value precision how close a set of measurements are to each other % error copoares your experimental value to a known value % error equation |your value-known value|/known value x 100 qualitive measures when you describe an object without using meausrements quantitive measures when you sescribe an object using measurements temperature the measurements of the average kinetic energy of particles in an objectthe higher the kinetic energy, the higher the temp. heating the process in which kinetic energy is in increased Authormnmitch ID34887 Card Setchem. chapter 2 Descriptionchapter 2 Updated2010-09-15T12:39:19Z Show Answers