P4 variables affect temp change

• why do we use a polystyrene cup

  insulator - decrease heat loss to surroundings
• why do you add a lid

  reduce heat loss to surroundings
• what is the equipment?

  • Measuring cylinders
  • Thermometer
  • Polystyrene cup (to reduce heat loss)
  • Beaker (to hold the cup)
  • Reactants
• control variables

  • Volume of acid
  • Starting temperature of solutions
  • Concentration of acid
• dependant variable

  temperature change