C3- energy calculations

PRACTICE OF CALCULATIONS ON SEPERATE PAPER

comparong energy released by fuels

• when fuels of food react ith oxygen the reaction is exothermic
• we can use a calorimeter to measure amount of energy released when substances burn
• simple calorimenters do not give accurate results because lots of the energy is used to heat the surroundings

energy transfers in solutions

• when a reaction takes place energy is transferred to or from reaction
• we do…