experimental

• mass of a substance is measured in?


  beam balance or electronic balance
• The SI base units are meter, kilogram, second, ampere, kelvin, mole, candela
• Kilogram (kg) - mass
• Ampere (A) - electric current
• Candela (cd) - luminous intensity
• Mole (mol) - amount of substance
• Kelvin (K) - thermodynamic temperature
• Second (s) - time
• measuring cylinder 


  nearest 0.5cm3
• burette


  accurately measures liquid to nearest 0.05cm3
• pipette 


  accurately measures fixed volumes e.g 20.0 or 25.0
• gas syringe 


  maximum volume of 100cm3