(5) 20 questions

• what do we call reactions which transfer energy to the surroundings

  exothermic
• a white powder dissolves in water to form a solution. the temperature falls by 2oC. State and explain the type of reaction that has taken place


  endothermic - the temp falls because energy is taken in from the surroundings
• which reaction profile goes low to high. endothermic or exothermic

  endothermic
• if you calculate the overall change in bond energy for an exothermic reaction would you expect it to be + or -

  negative
• what property of metals make them suitable for use as electrodes

  they conduct electricity
• what is activation energy

  the minimum energy required to start a reaction