Cards (11)

    • How does increasing surface area increase the rate of reaction?

      If an object is split into smaller objects it has more/larger surface area
      This means that more particles are exposed and available for collisions so there are most collisions and a faster reaction
    • How can the volume of gas produced be measured?

      Using a gas syringe
    • What equipment is used to measure the volume of gas produced?
      Gas syringe
    • What is the independent variable of the rate of reaction surface area investigation?
      The size of the chunks used e.g. limestone
    • What is the dependent variable of the rate of reaction surface area investigation?
      How much gas is produced at set time intervals
    • What are the control variables of the rate of reaction surface area investigation?
      -the acid (dilute)
      -concentration/volume of acid
      -reactants
      -gas syringe
    • If the surface area of a reactant is increased:

      • more particles are exposed to the other reactant
      • there is a greater chance of particles colliding, which leads to more successful collisions per second
      • the rate of reaction increases
    • Analysis of the rate of reaction surface area investigation:
      -small pieces reacted quicker
      -increasing the surface area increases the rate of reaction
    • Why do small pieces of the acid react quicker than larger pieces?
      There are more particles at the surface; so there’s a larger surface area meaning particles collide more often/frequently
    • Name the equipment
      Gas syringe
    • Name the equipment
      Conical flask